Boo

“Ghosts... ...don't... ...DIE! Heh, heh, heh! Can you get out of here... ...alive?”

—Boo, Super Mario 64

Boos (originally known as "Boo" Diddley) are common ghost-enemies in the Mario series that first appear in Super Mario Bros. 3. They are a type of white spherical ghost with menacing and constantly open mouths. They are known for their large tongues and small "arms" of some sort. However, the most distinctive characteristic of the Boos is their shy personality where they cover their faces when someone looks them directly at the face but will uncover their faces once the subject turned around. Goombario's tattle for the Boo Igor in Paper Mario states: "He probably was a merchant before he became a Boo," implying that current Boos may have once been living beings. It is revealed in Super Mario Galaxy that they speak in Booish.

History

Super Mario series

Super Mario Bros. 3

A Boo from Super Mario Bros. 3.

Boos first appear in Super Mario Bros. 3. Here, they are referred to as "Boo" Diddleys, a pun off the late rock star Bo Diddley. However, future games refer to them only as Boos. The Boo shields its face if Mario or Luigi look at it, but it starts to chase Mario or Luigi if they look away. Boos are unable to be defeated unless the two are equipped with a Hammer Suit, Koopa shell, Tanooki Suit, or Starman. The game also has Stretches, which are Boos with very long bodies that live in the Fortresses throughout the kingdom.

Super Mario World

In Super Mario World, there are Ghost Houses, which contain many Boos. These Boos retain their usual pattern of attack from Super Mario Bros. 3 and sometimes make faces at Mario or Luigi. This game also introduces many new sub-species of Boo, such as the Boo Buddy Block, Boo Buddy Snake, Boo Buddy Swarm, Circling Boo Buddies, Eeries, and Disappearing Boo Buddies. It also introduces a giant version of the Boo, the Big Boo, and a ghost-like Lakitu called a Fishin' Boo. One Ghost House contains a secret boss, The Big Boo.

Super Mario 64/Super Mario 64 DS

A Boo in Super Mario 64.

Boos coming at Mario in Super Mario 64 DS.

Boos make a starring appearance in the course Big Boo's Haunt in Super Mario 64. A group of Boos can be found in the Castle Gardens (eight of which are holding Red Coins in the DS version). After collecting twelve Power Stars, Mario is able to enter Big Boo's Haunt by going into the little cage a certain Boo drops; this Boo will be somewhat bigger than the others. He also battles Big Boo three times here. Additionally, when Mario look at the Boos, they attempt to hide by becoming partially transparent, but if Mario is not looking at them, they chase him. If they hit him, he lose two wedges of health. In the translucent Boo, the player can see a Coin or a Blue Coin. To defeat them, a punch or kick from behind or the side is needed. They can also be defeated with a Ground Pound while he is not looking at them. When defeated they give a Blue Coin, but the ones in the Castle Gardens give a normal Coin instead. When defeated in the first mssion, Go on a ghost hunt, the Boos will say, "Ghosts don't die, but can you make it out alive" when defeated.

In Super Mario 64 DS, in Big Boo's Haunt, Mario can find a Luigi painting, which will take him to the Big Boo Battle level on the balcony. After reaching the end by following the cackle of King Boo, he makes it to a room with a mirror at the end of it. He then has to battle King Boo. However, King Boo is invisible, and the only way for Mario to see it is by looking in the mirror, making it harder to hit the Boo. After hitting it three times, Mario gains the key to the room in which Luigi is imprisoned and proceeds to free him. In the English version of the game, King Boo is erroneously referred to as "Big Boo." Yoshi cannot defeat Boos in this game. Ground Pounding yields no results, and eating them simply causes Yoshi to spit them back out. Fortunately, the mustached plumbers can hit Boos with ground pounds.

Super Mario Bros. Deluxe

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The Boos from Super Mario Bros. Deluxe, arranged by speed.

While Boos do not appear in the original Super Mario Bros., Boos appear in Super Mario Bros. Deluxe as the main enemy in the "You VS. Boo" mode. The goal is to reach the flagpole before the Boo. After defeating Boo a certain amount of times, it flies away, and a Green Boo replaces it. After that Boo is defeated, a Red Boo takes its place, and finally, a Black Boo with a yellow outline appears. Each new Boo is faster than the one before it, meaning the plain White Boo is the slowest, while the so-called "Legendary Black Boo" is the fastest and hardest to defeat.

Super Mario Sunshine

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A Boo from Super Mario Sunshine.

Boos return in Super Mario Sunshine, terrorizing the residents of Hotel Delfino. In this game, they can be stunned by F.L.U.D.D. and defeated by being jumped on. Boos in this game can also be eaten by Yoshi. They also disguise themselves as coins. It turns out that Hotel Delfino has mysterious features, including flipping floor tiles, a magic painting, and a flipping bookcase. Mario treks through the hotel, solving its mysteries. Eventually, he finds King Boo in the basement of the Casino, and Mario has to battle it. He can defeat it by throwing a Chili at it and then throwing another piece of fruit at it. Mario has to do this three times before King Boo is defeated. Boos can also disguise themselves as Shadow Mario, while the real Shadow Mario runs from Mario. Boo's appearance has just one change, which is blue circles surrounding their black pupils. Red Boos also appear and can be turned into a platform if sprayed by F.L.U.D.D. Also appearing inside the hotel are a new species, known as Sleepy Boos. These Boos mostly appear to block passages. F.L.U.D.D.'s water does not affect them; they can be removed by being eaten by Yoshi.

New Super Mario Bros.

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Boos also appear in New Super Mario Bros.. They are found mainly in Ghost Houses, scattered throughout the game as well as World 8-1. They appear like they usually do, shy, and they act the same as in Super Mario Bros. 3. They can only be defeated with a Shell, a Starman or a Mega Mushroom. The game also introduces the Balloon Boo, which are normal Boos who could suck up the air, and become much bigger. Broozer, the boxing ghost, first appears in this game as well. An icon of a Boo covers the lower screen in Ghost Houses.

Super Mario Galaxy

Mario looking at a Boo in Super Mario Galaxy.

Boos make an appearance in Super Mario Galaxy and can be found in the Ghostly Galaxy, the Bigmouth Galaxy, the Deep Dark Galaxy, and the Sand Spiral Galaxy. Boos act the same way that they did in previous games, such as hiding by turning transparent when Mario looks at them and then following Mario when he looks away. Boos can only be defeated when they are brought under a ray of light (including the Toad Brigade captain's helmet and the light emitted from shells while in the water), and they cannot be defeated by Mario's spin or jump attack. However the spin attack can throw a Boo around Mario, knocking it off course temporarily or into a light. If a Boo spots Mario while he is in the Boo Suit, it falls in attraction with him and follows him, so it may be female. If a Boo hits Mario while he is in the Boo Suit, Mario loses the suit, but does not lose any health. Boos can also be found underwater in the Bigmouth Galaxy in this game. While underwater, Boos attack just by swimming back and forth, similar to Cheep-Cheeps, and damage Mario if they touch him. These Boos could be defeated only by pointing at them with the light of a Koopa Shell, and many more would appear after the player enters the central chamber.

An individual Boo named Spooky Speedster is found in two areas of the game. Mario must race him twice to win a Power Star. He is raced once in the Ghostly Galaxy and once again in the Boo's Boneyard Galaxy. This game also introduces a new kind of Boo, called the Bomb Boo; it is similar to a normal Boo, but is black with yellow eyes and can be grabbed by its tongue if Mario uses his spin attack on it. Spinning again will hammer-toss it into statues and enemies upon which it will blow up on impact destroying the statues and damaging enemies. However, if Mario holds onto the Bomb Boo too long, it will blow up and Mario will take damage. Shaking the Wii Remote when the Bomb Boo flashes red will make Mario let go of it, thus avoiding taking damage in this manner.

New Super Mario Bros. Wii

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A Boo chasing Mario in New Super Mario Bros. Wii.

Boos reappear in New Super Mario Bros. Wii in various ghost houses that have appeared in Super Mario World throughout the game. They behave the same way as they did in New Super Mario Bros and they are invincible, unless the player has a Star power-up. Big Boos also reappear along with Broozers. Circling Boo Buddies can also be found in a small amount of ghost houses in the game. Despite their concept art, they appear with a blue glow as opposed to plain white in this game, giving off a more spectral appearance. In the map, a single Boo will be watching Mario, and will taunt Mario as he enters. If Mario gets tossed out, the Boo will laugh. However, once the level is beaten, the Boo will cover its face for the rest of the game.

Super Mario Galaxy 2

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Boos alongside a Big Boo in the Haunty Halls Galaxy in Super Mario Galaxy 2.

Boos reappear in the game Super Mario Galaxy 2. They behave the same way they did in its predecessor. They are found in haunted levels such as Haunty Halls Galaxy and Boo Moon Galaxy. The underwater Boos from the prequel also appear in this game, in the Battle Belt Galaxy and Slimy Spring Galaxy. Bomb Boos and Big Boos also appear.

Super Mario 3D Land

A Boo chasing Fire Mario.

Boos later appear in Super Mario 3D Land. In the game, they retain their normal battle strategy, which is chasing Mario when he looks away while sticking its tongue out. Boos in this game also momentarily disappear when hit with Fire Mario's fireballs and Tanooki Mario's tail whips. Boos also laugh in their original phonic from Super Mario 64. Some Boos have Tanooki tails; these are called Tail Boos. They act like normal Boos, but, when they stop moving when Mario looks at them, they will swing their tails once, which can damage Mario. Big Boos also appear during the game. Another subspecies of Boo is also introduced, called Peepas. They do not act like normal Boos, instead moving around a set position, and do not halt when Mario looks at them.

The Adventures of Super Mario Bros. 3

A Boo in The Adventures of Super Mario Bros. 3.

Boos made infrequent appearances in The Adventures of Super Mario Bros. 3 television series, which depicted them as having a somewhat more menacing appearance. Like in the game the show was based on, Boos worked for Bowser and often aided him in causing trouble. An example of this is seen in the episode "Reign Storm", in which Bowser has several Boos terrorize the new Mushroom Shopping Mall. In this episode they were referred to as 'Boodidlies' which was their original name before it became Boo.

Super Mario World television series

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A Boo in the Super Mario World television series.

In Super Mario World, Boos, who were completely redesigned, appear in the episodes "Ghosts 'R' Us", in which a gang of Boos, as well as a Big Boo, appear to chase Yoshi through Wizardheimer's Haunted House, "The Night Before Cave Christmas", and when Yoshi sees one and he runs off screaming, and "The Yoshi Shuffle" in where several boos appeared in the audience during the episode. They are referred to as Ghosts.

Super Mario Adventures

In Super Mario Adventures, a horde of Boos appear to attack Mario and Luigi when they are tricked into a haunted house by Bowser and the Koopalings. Mario and Luigi become trapped by the Boos and a Big Boo, who are held at bay by the bros staring at them in the face. Eventually, nearing exhaustion, Mario races to a nearby room, dragging Luigi while being chased by the Boos. Upon barging into this room, the Boos and Big Boo find Mario dressed as a psychiatrist with Luigi as his nurse. After some talking, Mario and Luigi manage to reform the Boos and the Big Boo, while learning they were bullied in their youth and that is why they act so nasty to everyone. These Boos and their Big Boo leader were last seen happily waving goodbye to Mario, Luigi and Yoshi as they left the haunted house, which the Boos led them out of. Boos also make an appearance at Peach's wedding.

Super Mario-Kun

Lady Bow as seen on the cover of Super Mario-Kun issue 25.

Boos make appearances in some of the Super Mario-Kun comics. A Boo appears on the cover of the sixteenth issue. This issue is based on Super Mario 64. Alongside it, Eyerok, a Bob-omb, and Bowser can be seen. Throughout the comic, they appear, too. Their role in the comic is similar to their role in the game, where they are enemies to Mario and attempt to attack him. Lady Bow, a notable boo, appears in a couple of the Paper Mario based issues. These issues are 25 and 27. Lady Boo appears on the cover of the twenty-fifth issue along with many of Mario's other partners, including Goombario, Kooper, Eldstar, and Twink. Besides appearing on the cover, she appears throughout the comic. Her role in the comic mimics her role in the game. Lady Boo reappears on the cover of the twenty-seventh issue and in the comic. Like in issue 25, Lady Boo's role in the comic is similar to her appearance in the game, where she helps Mario. In a Super Mario Galaxy based issue, Boo Mario appears on the cover along with more of Mario's transformations.

Nintendo Adventure Books

In Koopa Capers, a Boo confronts Luigi if he decides to simply look through a keyhole in a fortress door, instead of barging through it. If Luigi decides to run away from it immediately, he will successfully escape, but if he decides to stand his ground, the Boo will chase him onto some floating blocks after he dodges its attack. Making a beeline for the door after mounting the blocks will allow the Boo to catch Luigi, but doing evasive techniques will allow him to escape it. When he begins his descent into the Magma Pit, Luigi will hear a Boo behind him, which causes him to pick up the pace, and escape it.

Illustrations of a Boo are used in puzzles in Dinosaur Dilemma and Flown the Koopa, though none appear in the actual stories.

Mario and the Incredible Rescue

Two Boos on the cover of Mario and the Incredible Rescue.

Boos makes an appearance in the chapter book, Mario and the Incredible Rescue. The cover features two Boos. One of the Boos is from Mario Kart: Super Circuit and the other is a mirrored Boo from Luigi's Mansion. They are known as "ghosts" in the book. Boos capture Princess Peach and take her to Bowser's Castle. Mario also sees a vision of Princess Peach being caged and surrounded by six Boos. Boos are eventually defeated by Mario at the end of the book. To defeat them, Mario casts a spell on them and sends them flying out of the castle.

Mario Kart series

Super Mario Kart

Boos made their first appearance in the Mario Kart series, in Super Mario Kart. Though not as obstacles, they only appear in three race courses. These courses are Ghost Valley 1, Ghost Valley 2, and Ghost Valley 3. In each race, they just laugh when the player drives by. They also appear as items, known as "Ghosts". When the player uses it, he/she will become transparent temporally, while the "Ghost" steals the opposing players item, if available. It's only obtainable in 2 player mode.

Mario Kart 64

Boos are used as an item, in Mario Kart 64. When activated, the Boo selects a racer with the best item in reach, and steals the item and gives it to the player that released it. At the same time, the player turns invisible and therefore is completely invulnerable for a short period of time. While invisible, the player can pass the other racers more easily by simply going through them. If no other players have any items, the Boo will return empty handed. Boos also appear in the course Banshee Boardwalk.

Mario Kart: Super Circuit

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A Boo from Mario Kart: Super Circuit.

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Boos attacking Toad in Broken Pier.

Boos appear as items, again, in Mario Kart: Super Circuit. When activated, they can also slow down the leading racer. Boos also appear in two new courses, Boo Lake and Broken Pier. In Boo Lake, Boos hold candles which guide the player through the track. In Broken Pier, they attack the players and take their coins. Ghost Valley 1, Ghost Valley 2, and Ghost Valley 3 also reappear with Boos in it.

Mario Kart Arcade GP

Boos appear as items in the arcade game, Mario Kart Arcade GP. A Boo appears as a basic item. It causes whoever is hit by it to slow down temporarily. There is also a new item called the Triple Boo.

Mario Kart DS

In Mario Kart DS, Boos reappear as items. The only difference is, they do not slow down the leading racer. Also, using the Boo won't affect off-road racing, so various shortcuts can be made. Some pictures of Boos from the game, Luigi's Mansion, appear in the Luigi's Mansion race course. Banshee Boardwalk reappears as a race, along with the Boos. They do not do anything that effects the racers, they just laugh when a racer drives by

Mario Kart Arcade GP 2

Boos reappear in the arcade game, Mario Kart Arcade GP 2. Like what they do in Mario Kart Arcade GP, they slow down the leading racer. Though, the Triple Boos do not appear in this game, even though it appears in the prequel.

Mario Kart Wii

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Boos from the track, Ghost Valley 2 in Mario Kart Wii.

Boos do not appear as items in Mario Kart Wii, but King Boo appears as a playable character. However, Boos do appear in a returning race, Ghost Valley 2. Like their original appearance in the track, Boos only laugh when racers drive by, but they eventually disappear. Boo also makes a cameo in Bowser's Castle. At the end of the track Boo's Mario Party 7 artwork can be seen along with Dry Bone's artwork.

Mario Baseball series

Boo prepares to bat in Mario Super Sluggers.

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Mini Boos being used in Mario Super Sluggers.

Boo makes its first baseball appearance in Mario Superstar Baseball. It is on Wario's team as a starter. Boo is tied with Peach with its pitching, losing only to Bowser and Waluigi. Its special running and fielding move is a Super Jump. The only worse fielder in the game is Bowser.

Boo makes another appearance in Mario Super Sluggers. It is on Wario's team once again, and it can be unlocked in Wario City by finding it in between boxes and completing its challenge. Like its predecessor, Boo has the highest ranked pitch in the game, along with Peach (9/10), but its other stats range from average to low. Boo displays good chemistry with King Boo, Shy Guy, Magikoopa, and Blooper. Its chemistry with Luigi, Baby Mario, and Baby Luigi, is bad.

Also, a new item, called Mini Boos, appears. When activated, Mini Boos turn the ball invisible for a short period of time. If use against a NPC, the player will stop moving until the boos go away. If used when a special hit is effect, the boos do nothing.

Super Mario Land series

Super Mario Land 2: 6 Golden Coins

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Boos appear in Super Mario Land 2: 6 Golden Coins. These Boos are relatively unchanged from the previous Boos. Boos in this game are found in the Pumpkin Zone. A thrown Green Shell can defeat it. A new sub-species named Terekuribos, which are a species of undead Goombas, also appears in this game.

Hotel Mario

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A Boo from Hotel Mario.

Boos also appear in the game Hotel Mario, though exclusively under the name of Boo Buddies. There are two types of Boos in this game. One type stays visible and does not hurt Mario until transparency is achieved, at which they can harm the heroic plumber. The other type of Boo uses the traditional attack method and turns invisible when looked at, and attacks Mario when his back is turned.

Yakuman DS

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Boos on the character selection screen in Yakuman DS.

Boos appear in the Japan-only Nintendo DS game, Yakuman DS. They are one of the many opponents. Other opponents include, Goomba, Diddy Kong, and Hammer Bro.. Boos are not unlockable or playable. They are opponents from the start of the game.

Tetris DS

Boos also appear in the Nintendo DS game, Tetris DS. They are one of the few multiplayer items. Other items include, Mushrooms and Lightning. Boos are able to block the opponents sight of the upcoming block, making it harder for the opposing player to see the upcoming block. They do not appear in single player.

Yoshi series

Yoshi

A Boo from Yoshi.

Boos make an appearance in Yoshi. They are enemies in the A Type part of the game, as well as the B Type. Boos are not main enemies in the game, as they simply make appearances throughout some parts of the game. Boo's sprite in the game is similar to its sprite from Super Mario Bros. 3. Many of the other enemies' sprites also are similar to their sprites from Super Mario Bros. 3.

Yoshi's Cookie

In Yoshi's Cookie, Boos return as enemies to Yoshi. Though in this game, they are depicted as one of Yoshi's "opponents". They are among the easy opponents, the others being Goomba, Cheep Cheep, Paratroopa, and Spiny. Two sub-species of Boo, Eerie and Fishin' Boo appear, too.

Yoshi's Safari

A Boo from Yoshi's Safari.

In Yoshi's Safari, Boos appear as enemies. They first and only appearance throughout the game is in the Ghost Mansion, a level in the Dark Realm. A Big Boo serves as the boss for the level. Just like any other enemy in the game, Yoshi must shoot the Boos with his Super Scope.

Super Mario World 2: Yoshi's Island

Boos first appear chronologically as antagonists to Yoshi in Super Mario World 2: Yoshi's Island. They are first seen in World 2, which featur numerous ghastly creatures. They are underlings for Kamek, the head of the Magikoopas, who turns one Boo into Bigger Boo, which grows in size every time he is hit by an egg. It serves as a minor boss. The main boss of World 2 is also a Boo-like creature, Roger the Potted Ghost, who is a normal flower pot, until Kamek makes him giant, and transforms it into a living creature. The game also features the Boo Blah, a spectacle Boo exclusive to this game. The only way to defeat Boos is by looking away and then make a egg bounce off a wall after it is thrown, hitting the ghost in the face.

Yoshi's Story

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A Boo in Yoshi's Story.

Boos appear in Yoshi's Story in Stage 6-3: Ghost Castle. They do not act differently, although they are slightly bigger. In this game, the normal Boo is called a Big Boo, despite not being an actual Big Boo. The Ghost Castle is also home to other Boo species: namely, the Boo Block, Blindfold Boo, and others. The stage, Yoshi Sewers, also has ghost platforms, along with a blue boo variant called a Boo Buddy.

Yoshi's Universal Gravitation

Boos appear again in Yoshi's Universal Gravitation however in this game they are very rare enemies. In fact, there are only four missions that they appear in. They follow the same tactics as normal. In this game, they are in 3-D, and use their normal laugh that is used in previous games.

Yoshi's Island DS

Two Boos from Yoshi's Island DS.

Yoshi comes into contact with Boos, again, in Yoshi's Island DS. Here, they are commonly found in castles, along with other ghastly creatures. Again, they work for Kamek. They attack the same as all Boos before, but like in Super Mario World 2: Yoshi's Island, they can only be defeated if Yoshi looks away. So Yoshi must bounce an egg off of the wall into their face to defeat them. A Boo-like mid-boss, named Hector the Reflector appears as well. The Boos' laughs are used in many games before. It is used for the boss Six-Face Sal, and even Baby Bowser.

Super Mario RPG: Legend of the Seven Stars

Template:Smrpgenemy Boos return during the events of Super Mario RPG: Legend of the Seven Stars. The English translation erroneously calls them "The Big Boo". In the japanese version in fact they are just called Teresa. These Boos, like other Boos that appear in previous games, hide behind their arms when stared at. However, some of The Big Boos teleport around the room, attempting to scare Mario and his friends. The Big Boos live in Kero Sewers along with many other ghouls, including Hobgoblins and Shadows. Often, these three undead monsters will assist each other in battle. Strangely enough, Big Boos have no physical defense, making them extremely weak enemies (even a Goomba has three defense points). However, The Big Boos make up for their lack of defense with high evasion, meaning that most attacks against a The Big Boo will miss. In battle, The Big Boos command powerful lighting magic, including the attacks Lightning Orb and Bolt. The Big Boos also know the special attack Scream, which cuts a party member's attack and defense in half. When not using magic, a The Big Boo will approach one of Mario's party members and make a face, damaging that character. In this game there is also a stronger Boo variation called Li'l Boos, which are the same size as normal Boos but have blue tongues, similar to the first appearance of King Boo. The only true appearance of a Big Boo in this game is the one used in Bowser's Terrorize attack .

Mario Party series

Mario Party

Mario, Luigi, Peach, and Donkey Kong cutting out a Boo.

Boos make minor appearances in Mario Party. Their voices can be mimicked by one of the items: the Talking Parrot. Boos also appear in each of the game's board maps, excluding Peach's Birthday Cake. On the boards, they steal coins or stars from opponents, and they are willing to steal a few coins for free from any player, although they ask for coins to steal a star. If the player tells Boo that they don't want to steal anything then Boo will say Don't feel so guilty. Ha ha ha! Additionally, after the Luigi's Engine Room board is completed, a Boo, Koopa, and a Toad, along with the two runner-ups, surround the victor and congratulate them. Boos also appear as one of the shapes the player can cut in the minigame, Crazy Cutter.

Mario Party 2

Boo as it appears in Mario Party 2.

Boos make several appearances in Mario Party 2. In it, they steal coins or stars as they did in the first game. Additionally, an item called the Boo Bell appears. When a player obtains it, they can ring for a Boo to come. The Boo that comes to the player's side is asked to steal coins or stars, depending on how much the player can afford. If the Boo is sent to steal coins from an opponent, the opponent can fight it off by pressing the A button quickly. Additionally, the Boo can only steal a maximum of 30 coins or a maximum of one star.

A Boo also appears in the battle minigame, Day at the Races, along with the others racers, Whomp, Thwomp, and Bob-omb. The Boo can disappear and then reappear in a further spot on the racetrack. However, it gets its face stuck in the ground sometimes, causing it to stop for a short period of time.

Mario Party 3

Boo from Mario Party 3.

Boos also appear in Mario Party 3. Like in their previous appearances, they are not major characters in the game. They are among the Duel Partners in the Duel Mode Partners. Its partner is Yoshi and it is able to counterattack the attacker's move for equal damage. Boos appear in the unlockable party board, Waluigi's Island. Whenever a player runs into a Boo, it will show them to two paths. One of the paths are rigged. If the player chooses the rigged path, they will be summoned back to the start. If they choose the correct path, they will continue on the board. Boos appear on all of the other boards, Chilly Waters, Deep Bloober Sea, Spiny Desert, Woody Woods, and Creepy Cavern. On the board map, a picture of them can be seen next to a grave. Boos try to steal the player's coins or stars. They also return with the Boo Bell. Boos is also in the minigames Curtain Call, Stacked Deck, Three Door Monty, and Crowd Cover. There are also pictures of Boos in Locked Out.

Mario Party 4

The Sorcerer Boo from Mario Party 4.

In Mario Party 4, a Boo plays a major role as the host for Boo's Haunted Bash. This Boo has a whole new look with a wizard's cape. Like the other hosts in the game, it is the character to reward to player with a star. Multiple Boos also appear on this board as background characters. One controls the Item Shop. Another one owns the Mystery Train, but it only gives out rides to the Boneyard if a Red Boo is not in its presence. Two other Boos own the Boo House, allowing players to steal stars and coins from their opponents. Boo's Crystal Ball has the same effect as the Boo house. Two sidegames involving Boos requires a Mini Mushroom. One of them has the player pressing one of the keys of the Horn of Penalty to get one of three randomly chosen items. The second one has the character on a piano. They have to press the correct key at the right time until the end of the sidegame to get a certain amount of coins. A question mark space activates a Boo clock. If three people land on them, Big Boo will appear. Big Boo is basically an upgraded version of the Boo House; he targets all players instead of one. Boo is also the fourth host of the Reversal of Fortune, who oversees what is given. Also, a Boo is an unlockable, playable character in the stage, Beach Volley Folley. They also appear on all of the other boards, Toad's Midway Madness, Koopa's Seaside Soiree, Goomba's Greedy Gala, Shy Guy's Jungle Jam, and Bowser's Gnarly Party. On theses boards, the player can go to them to steal coins or stars from the other players.

Mario Party 5

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Boo from Mario Party 5.

Mario Party 5 marks the first game in the Mario Party series where a Boo is a playable character in Party Mode. It is one of the unlockable characters, the others being Koopa Kid and Toad. Boo's partner in the game is Koopa Kid. Since Boo is playable, it does not make any major background appearances.

Mario Party 6

Boo, along with some Red Boos, from Mario Party 6.

A Boo reappears as playable character in Mario Party 6. In this game, it is a default character. In the game, there is also an orb called Boo Away Orb, which protects the player from a Red Boo. Red Boos also appear in the minigame Boo'd Off the Stage. Red Boos also appear two boards, Towering Treetop and Castaway Bay. This game also marks the third appearance of Red Boos in the Mario Party series.

Mario Party Advance

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Boos and a Snifit in the Horror Condo in Mario Party Advance.

Boos appear in Mario Party Advance as supporting characters. They appear in a few minigames, including Boo-Bye. In this minigame, regular Boos appear alongside Red Boos and Blue Boos.

They also appear in the Boo Cemetery where they are main characters in the quest, True-Blue Boo. This is a mystery quest, in which their golden Boo statue has been stolen, and they suspect that one of them has stolen it. They then notice that there are four of them, and it is up to the player to discover which one is a fake. Once he is discovered, the fake Boo reveals himself as Koopa Kid, and flees the area, leaving the statue behind. The Boos then reward the player with the Gaddget Predictotron.

They also appear in the Horror Condo in the quest Condo of Mystery!. A Snifit states that the condo isn't haunted, and the player has to head to the Boos and ask them to haunt it. After arriving at the cemetery, the Boos state that they actually forgot to haunt the condo, and head there to do so.

The end credits state that they haunt the condo daily.

Mario Party 7

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Boo and Dry Bones from Mario Party 7.

Mario Party 7 marks the third Mario Party game where Boo is playable. It also marks Dry Bones's first playable appearance, who is Boo's partner throughout the game. Red Boos appear in the game, too. Red Boos appear in a few minigames such as Ghost in the Hall. In this minigame, Red Boos try to scare the players. Oddly, the Red Boos also try to scare Boo, if Boo is one of the characters.

Mario Party 8

Boo from Mario Party 8.

Mario Party 8, marks the latest game where Boo is a playable character in the Mario Party series. Boo's partner is Dry Bones, again. Red Boos appear in some minigames such as Boo-ting Gallery. Mario Party 8 also marks the first appearance of King Boo, who is the board host of King Boo's Haunted Hideaway. In order to get a star, the player must find the room King Boo is hiding in and give him ten coins. There are three rooms, two of which contain a trap hole. If the player finds one of these rooms, several Red Boos will throw him/her in, forcing the player to start back at the beginning. When the player gets a star, King Boo will rearrange the mansion's rooms. Red Boos appear as owners of the item shops.

Mario Party DS

File:MPDS Peek-a-Boo.jpg

Boos from the minigame, Peek-a-Boo, in Mario Party DS.

Boo is not a playable character in Mario Party DS and plays no part in board play, but appears as an unlockable figure. They also appear in the mini-games Boo Tag, and Peek-a-Boo. In Boo Tag, a Boo tags a player. The tagged player must try to get rid of the Boo by running into another player. The player that spent the least time with the Boo wins. In Peek-a-Boo, the players must find the wanted Boo. A lot of different Boos appear in outfits, such as hats. Several of the wanted Boo appear, and once they are all gone, the game is over. The team that one the most Boos wins.

Mario Party 9

File:Mp9 e.jpg

A Boo in Mario Party 9.

In Mario Party 9, King Boo is the boss of Boo's Horror Castle. Normal Boos also appear on the board. When the player passes a Boo portrait, a Boo will emerge and chase after the player. These Boos will move three spaces after each turn, and if a Boo catches up to the players (or vice versa), the current captain will lose half of all of his or her Mini Stars.

Mario Tennis series

Mario Tennis (Nintendo 64)

Boo from Mario Tennis.

A Boo appears in Mario Tennis for the Nintendo 64. It is classified as a tricky character. The only other tricky character is Paratroopa. It is also a default character. Most of the playable characters have courts named after them. However, Boo does not have its own court.

Mario Tennis (Game Boy Color)

Boo and Daisy's cameo appearance.

A Boo makes a cameo appearance in Mario Tennis for the Game Boy Color. Princess Daisy and Toad also make cameo appearances. They can be seen in the audience at Peach's Castle.

Mario Power Tennis

File:MPTBoo.PNG

Boo from Mario Power Tennis.

Boo also appears in Mario Power Tennis where it is a playable character. When it wins a championship, Mario and Luigi would come out with the trophy and Boo would be missing. They look around and then the trophy would start to float. Boo then appear unders it and Mario and Luigi are relieved. Then they start floating and the air is full of Boos who start flying around. Then the main Boo flies up to the screen and holds the trophy. Boo's taunt is to wave its racket while laughing. Boo's offensive power shot is the Boo Blast and its defensive power shot is the Boo Brigade Return.

Mario Golf series

Boo from Mario Golf: Toadstool Tour.

A Boo makes a couple of appearances in the Mario Golf series. It first appears in Mario Golf for the Nintendo 64. Boo is one Mario's Power Star Holes for Hole 2. Also, Boos appear in one of the courses, Boo Valley. Boo is one of the unlockable characters in Mario Golf: Toadstool Tour, the others being Bowser Jr., Shadow Mario, and Petey Piranha. Boos also appear in one of the courses, Bowser Badlands.

Mario Football series

Mario Strikers Charged Football

File:Boo MSC.jpg

Boo from Mario Strikers Charged Football.

Although Boos do not appear in Mario Smash Football, the do appear in its sequel, Mario Strikers Charged Football. Boos, along with Hammer Bros., Toads, Koopa Troopas, Birdos, Dry Bones, Monty Moles, and Shy Guys, are sidekicks to the many captains. They appear with a helmet with the logo of their team captain. Boos are classified as a playmaker. The only other playmaker are Toads. Their skillshot is Possess. The given description of the Boos is: "This ghost can fly up and down the sidelines with great speed, using precise and accurate passing to lead his team to victory. His long-distance shots are quite weak though and his hits are not very powerful. If Boo gets a chance, he can Possess the ball and score at will."

Paper Mario series

Paper Mario

File:PMBoo.png

The Boo's Mansion in Paper Mario for the Nintendo 64 is a bigger version of the SNES Super Mario World Ghost Houses, which has many puzzles involving Boos in it. The only difference, is that these Boos are kind, but tricky Boos. After solving these puzzles, Lady Bow, the princess of the Boos, joins Mario's party, in order to destroy Tubba Blubba, who has been terrorizing the native Boos, by having them as a snack. One certain Boo he eats is Stanley. Mario helps Lady Bow in order to get the Star Spirit she has in her possession. In Paper Mario: The Thousand-Year Door, Bow and Bootler are seen on vacation in Poshley Heights after Mario and his teammates defeat the Shadow Queen.

Paper Mario: The Thousand-Year Door

Template:Pmenemybox In the GameCube game Paper Mario: The Thousand-Year Door, the Boos live in a tower called Creepy Steeple. When Mario first enters the steeple there is only one Boo in the room who says that he misses his friends. He will let Mario through one door (Blocking him from using any other doors), where he finds a chest. When he opens it, 200 Boos fly out. The last Boo asks Mario "How many Boos came out of that chest?" If Mario answers correctly the Boo will give him an Ultra Shroom. If Mario is wrong the Boo will give him one Coin. Upon returning the main room, the first Boo is still there. He asks if Mario is going to be mean to him. If Mario answers "No", a bunch of Boos (The same ones from the treasure chest) will start flying around the main room, attempting to swarm Mario. If successful, they will throw Mario out of the Steeple, exactly like the Sentinels in Tubba Blubba's Castle. If Mario Spin Attacks them several times, they merge into the Atomic Boo. Once the Atomic Boo is defeated, Mario can fight Boos in other parts of the Steeple. Strangely enough, the original Creepy Steeple Boo sends a letter to Mario that thanks him for freeing his friends, despite the fact that he and his friends attacked him. He signs the letter "The Creepy Steeple Boo". More Boos can be found in the Pit of 100 Trials. In this game, Boos attack by becoming invisible and getting close to Mario or the partner, then becoming visible and making a glare at him/her, causing 3 damage. The game also introduces a more powerful sub-species, the Dark Boo, which can be found in Poshley Sanctum.

Super Paper Mario

Template:Spmenemybox Boos return as enemies in Super Paper Mario. In this game, they turn invisible if Mario looks at them, but they turn visible and chase him if he is not looking at them, similar to in Super Mario 64. To defeat them, the player must approach them from the back and then attack them. Additionally, the Arcade in Flipside houses a Boo themed shooting game. This game has the player shooting Boos (Both Normal, Dark and occasionally Big Boos) to score points. A Toad frequently appears to give power ups, as long as the player saves him from his Boo captor.

Mario & Sonic series

Boos are minor, supporting characters in Mario & Sonic at the Olympic Games. It appears in the version for the Wii and Nintendo DS. They are not playable characters, but they can be seen in the crowd with other Mario enemies, including Bullet Bills, Goombas, and Bob-ombs. Though Boos do not appear in Mario & Sonic at the Olympic Winter Games, King Boo is one of the rivals.

Mario Bros.

Boos make an appearance in the Super Mario All-Stars remake of Mario Bros.. This version of Super Mario All-Stars is for the NES. Koopa Troopas, who replace Shellcreepers, and Spinies also appear in the remakes of Mario Bros., but not in the same remake as Boos. Boos also replace the green fireballs from the original Mario Bros..

Mario's Picross

Boos also make a cameo appearance in the Game Boy game, Mario's Picross. They appear in one of the pictures in the "Early Picross" stage in level 6C. The other character that appears in the "Early Picross" stage is Mario, who appears in level 6H. Like their first appearance, Super Mario Bros. 3, they appear under the name Boo Diddley.

Mario Clash

Boos make appearances in the Virtual Boy game, Mario Clash. They are among the nine enemies. Some of these enemies include, Pokeys, Paragoombas, and Snakes. Though Mario Clash is a new style of Mario Bros., Boos do not appear in Mario Bros., but they do appear in a remake. In this game, Boos' objectives are to defeat Mario, but Mario is able to attack a Boo from the side.

Luigi's Mansion

A Boo in Luigi's Mansion.

In Luigi's Mansion, Boos are the main antagonists. King Boo sends a letter to Luigi, stating that he had won a Mansion in a contest. However, Luigi did not enter any contest, but pays no attention, and heads off. Mario goes on ahead, but get captures by the King of the Boos, King Boo. Luigi has to rescue him from the Boos, using E. Gadd's Poltergust 3000. Luigi manages to find his brother, stuck in a painting. He ends up having to battle King Boo in order to rescue Mario. King Boo sends them to the roof of the Mansion, and uses a Bowser suit to battle him. However, the suit's head could come off once a spikeball was thrown at him, and King Boo would float out, leaving him open for Luigi's Poltergust. After taking away all of his 500 HP, King Boo is turned into a painting, and Mario is restored back to his normal self. However, King Boo manages to escape by unknown means and reappears in several future Mario games.

There are 50 Boos (51 including King Boo) which Luigi must suck up in the Poltergust 3000. Of these, 15 of them make up the portrait ghost Boolossus, with King Boo as the final Boo. When Luigi attacks them, they usually run away, but occasionally twirl into him to cause damage. It should also be noted that all of the 36 Boos, excluding King Boo and counting Boolossus as one Boo, have puns in their names.

Game & Watch Gallery Advance

A Boo appears in the Modern version of Donkey Kong 3 in Game & Watch Gallery Advance. If Mario or Donkey Kong turn their backs, it'll slowly come closer to the player that it's closest to. If it gets close enough, the Boo will either scare Donkey Kong and award the player points (1 player only), or scare Mario and give the player a miss.

Dance Dance Revolution: Mario Mix

A Boo with Mario.

Some Boos make appearances in Dance Dance Revolution: Mario Mix in both regular and giant varieties. Their objective is to try to make Mario miss a step. If successful, they block Mario's next move. Mario is able to step on regular Boos to hold them back, but he can not do the same to their gigantic counterparts.

Mario Hoops 3-on-3

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Boo from Mario Hoops 3-on-3.

A Boo makes an appearance in Mario Hoops 3-on-3. It appears as an unlockable character. It is unlocked by beating the Flower Tourney on hard. Boo's special ability is the Thriller Dunk. This is performed by tapping a B-like shape twice. In the game, the Boo is classified as a tricky character. The other tricky characters are Paratroopa, Fly Guy, and Moogle. Boo is also one of many of the unlockable characters to not have a baller name.

Mario Sports Mix

Boos seen in the background in Mario Sports Mix.

Boos appear in Mario Sports Mix. They appear as the only members of the crowd in Luigi's Mansion circling around the court. Their appearances are in Basketball and Volleyball matches and their laughs can also be heard during the game. Mainly, they can be heard when the player gets a point.

Mario & Luigi series

Mario & Luigi: Superstar Saga

Template:MLinfobox In Mario & Luigi: Superstar Saga, Boos are enemies that only appear in Bowser's Castle. Outside of the battle, they hover around, attacking Mario and Luigi when they are not looking. However, they look away if Mario or Luigi make eye contact. The Boos also show the ability to teleport outside battle. In battle, they fly up into the air, and fall back down into the Mario Bros., and even prohibit the use of certain moves. These Boos are unknowingly aiding Bowletta, thinking she is the actual Bowser. They are weak to Fire Bros.

Mario & Luigi: Partners in Time

Template:Pitenemy During the events of Mario & Luigi: Partners in Time, Boos appear in Bowser's Castle of the past. Mario, Luigi, Baby Mario, and Baby Luigi meet a lot of them while trying to reach the end of Baby Bowser's Castle. In the field, Boos attack the same way as they did in Mario & Luigi: Superstar Saga, but in-battle they fight differently, and have significantly decreased defense. They cover their faces, but when they start to attack, the Boo would take one of its hands off one of its eyes, showing who it is about to attack. If it shows its right eye, it will attack Mario, but if it shows its left eye, it is attacking Luigi. Then it would appear from behind, and charge towards one of the Mario Bros.. However, this could easily be countered with a jump. They also appear during the battle with Sunnycide. After the Mario Bros. flip the egg monster over, Sunnycide could summon a Boo to attack Mario or Luigi. Dark Boos also return in the game, and are found in the Gritzy Caves. Also, when a Handfake has a Bowser sign, a Boo or a Fly Guy carries a flame from Bowser's mouth.

Mario & Luigi: Bowser's Inside Story

A Boo holding a plate.

Boos make a reappearance in Mario & Luigi: Bowser's Inside Story. They appear in Bowser's Castle, after being brainwashed by Fawful, and they also help many of the former minions of Bowser push the Fawful statue against the power-upped Bowser. In addition, a Boo appears whenever Bowser gets a level up. The Boo (just like the Lakitu in Mario's or Luigi's level up screen) holds the circle for getting a bonus upgrade for the stat of the players choice.

Yikk, a ghost who appears in the same game at the Tower of Yikk, explains that he researches Boos. He even builds a machine to visualize Boo transparency waves before he passed away.

An odd thing shown in the game is a Boo and Koopa Troopa in love with each other in Bowser's Castle. They not only love each other, but also love Fawful, due to the brainwashing that was put on the minions.

Mario vs. Donkey Kong series

Mario vs. Donkey Kong

A Boo appears in Mario vs. Donkey Kong. Throughout the whole game, they make only one appearance in the Spooky House. It uses its regular battle strategy, which is attacking Mario when his back is turned and looking away when Mario turns around. The Boo sticks its tongue out at Mario if he is about to lose a life.

Mario Pinball Land

A group of Boos with Petey Piranha in Mario Pinball Land.

In Mario Pinball Land, Boos appear in certain areas in the game. Mario cannot hit them at the front because they will become transparent as Mario passes through them. If Mario hits one of the Boos on its back, the Boo disappears and it is worth two-thousand points. They occasionally will disappear and reappear to another spot in the area.

A Big Boo also appears as one of the game's bosses. He is the boss of the haunted house and can only be damaged by hitting it from behind.

Super Princess Peach

Boos appear in Princess Peach's first starring game, Super Princess Peach. They act as normal Boos, hiding their face when Peach looked, and attacking when Peach has her back turned. However, there is an angry variety called the Mad Boo, which attacks the opposite way. They attack when Peach looks at them, and gander around for her when she looks away. Big Boos and their vibe counterparts, a new subspecies called Mad Big Boos, also appear.

King Boo also appears, as one of the bosses of the game. He will attack Peach by shooting fireballs at her, but she can use these to light the candles on the wall, damaging him. His vibe during the game is Gloom, which he will use to douse the candles.

Super Smash Bros. series

Super Smash Bros. Brawl

The trophy of a Boo, from Super Smash Bros. Brawl.

As well as appearing as a trophy in Super Smash Bros. Brawl, Boos make cameos in the Luigi's Mansion stage. When a part of the mansion is knocked down, Boos are seen flying out.

General Information

Appearance

File:Boo History.PNG

Boos as they appear in various games.

Though their specifics change from game to game, Boos are usually bashful, cowardly, spherical ghosts. They have black eyes and fangs. Although they are typically white in color there are sub-species of the Boo race which appear in different colors, such as pink. From Luigi's Mansion onward, it became common to picture Boos sticking out their tongues. Since Super Mario 64, Boos have been portrayed with a unique, high-pitched laugh. In actuality, this laugh is the same as Bowser's, sped up several times. However, Boos got a new laugh starting in the Hide and Boo Seek mini game, being more of a haunting laugh than before. Although most species of Boo will cover their faces and become intangible when looked at, they will often sneak behind their victim and strike when their back is turned. Due to their ghostly abilities, Boos are generally invulnerable, and cannot be harmed by ordinary means of attack. While this is true, they are not invincible, and are especially vulnerable to the light. If they are exposed to a source of light, Boos are usually weakened, and in some cases they may even perish. Usually, they can also have other weaknesses. Because of their intolerance to the light, Boos will often hide if they are trapped in lit rooms. While the ghosts generally appear to be more afraid of their victims than their victim is of them, this is not always the case. Some Boos have absolutely no problem meeting their victim's gaze, and will even try to attack. Boos tend to have a taste for the fine arts, as seen in Paper Mario and Mario Party 4. The best way to defeat a Boo is to sneak behind it so it cannot see the player and disappear, or to set a trap for the Boo while the player's back is turned (ie: using an item, or in Super Paper Mario, a Pixl).

Boos are often characterized by their sub-species; despite their similarities in appearance and attack manner. Boo species tend to wildly differ in size, with some such as Boo Buddies being miniature, while others such as the Big Boos boast gigantic size.

In Luigi's Mansion, Professor E. Gadd notes that Boos have mysterious powers that increase when they gather together in large groups. While it is difficult to stop them, they can be weakened if one is able to defeat members of the group.

Boos have few predators, their only known threat being a Clubba named Tubba Blubba. This is first seen in Paper Mario, when he began devouring Boos; this, however, may have been his revenge for the countless times the ghosts scared him.

Tools

• Boo's Sheet - Paper Mario: The Thousand-Year Door
• Fright Bomb - Super Mario RPG: Legend of the Seven Stars
• Boo Bell - Mario Party 2
• Boo's Crystal Ball - Mario Party 4

Habitat

Boos typically make their homes in dark forests, such as the Forever Forest and Boo Woods, and tend to be most commonly found in older buildings such as mansions, castles, and Ghost Houses. Although most of them live in such dwellings, they also seem to enjoy wastelands. One of the only known Boo villages lies in Gusty Gulch.

They are typically found in groups because their fears make them find strength in big numbers.

Allegiance

Though most Boos tend to side with King Boo, they seem to, for the most part, actually stand as neutral. For example, Boos are by now a common enemy in most side-scrolling games; however, in the Paper Mario series and now increasingly in the multiplayer games, Boos have been seen to take the side of the Mushroom Kingdom. Lady Bow, in fact, helped Mario save the kingdom in Paper Mario. In another example, the Boos in the Creepy Steeple from Paper Mario: The Thousand-Year Door attack Mario initially, but later in the game Mario is sent a friendly letter from one of them. King Boo, on the other hand, has several times been shown to wish nothing but terrible things for Luigi (but this could be accredited to Luigi being easily scared, making him a prime target for most Boo antics). They also have attacked Bowser in some games.

Profiles and Statistics

Lil' Boo's Stats, Super Mario RPG: Legend of the Seven Stars

• HP 66
• Attack 120
• Defense 20
• Magic Attack 74
• Magic Defense 120

The Big Boo's Stats, Super Mario RPG: Legend of the Seven Stars

• HP 43
• Attack 18
• Defense 0
• Magic Attack 18
• Magic Defense 24

Trophies from the Super Smash Bros. series

Super Smash Bros. Melee

Name	Image	Game	Description
Boo	File:Trophy209.PNG	Super Mario Bros. 3 02/90	These shy spirits inhabit Mario's world and have been known to vanish or freeze when met face-to-face. In recent years, they seem to have overcome their fears in order to pursue tennis and other social activities. They usually appear in groups and fly in formation. From time to time, giant Boos make surprise appearances.

Super Smash Bros. Brawl

Name	Image	Game	Description
Boo		NES Super Mario Bros. 3	A bashful ghost who draws near when your back is turned but shyly stops and disappears when you face it. Boos have been seen recently in activities like baseball and tennis, so it's thought that they may have conquered their fear of humans. Boos are also characterized by having a variety of different weaknesses between forms.
		DS Yoshi's Island DS

Information from Mario Sports Games

Mario Superstar Baseball Information

• Type: Technique
• Starting Team Captain: Wario
• Status: Player
• Stats:
  • Batting: 3/10
  • Pitching: 8/10
  • Fielding: 2/10
  • Running: 4/10
• Player Profile:
  • Strength: Pitching
  • Special Talents: Super Jump
  • Trajectory:
    • Field: Center
    • Height: Normal
• Star Pitch: Curveball
• Star Swing: Center
• Sweet Spot: The Boo face on the bat
• Compatible Relationships: Wario, Magikoopa, King Boo
• Bio: "Bowser's underling ghost. Behind the scary face lies a very shy soul. Look most Boos in the eyes and they'll cover their faces...but turn around and they'll attack you! Boos confuse their enemies by flickering in and out of the visible realm, appearing at inconvenient times."

Mario Hoops 3-on-3

• Type: Tricky
• Special Shot: Thriller Dunk
• Letter to Tap: B

Mario Party DS

• Trophy: This ghostly creature is a common sight. Do you think he's a nice guy? Ask him. He's right behind you.

Mario Party 7 Info

• Partner: Dry Bones
• Special Orb: Magic/Surprise

Mario Party 8

• Website Bio: Scare up some extra excitement as Boo and get ready for a ghoulishly good time!
• Team Names:
  • Mario: Soul Bros.
  • Luigi: Scaredy Pants
  • Peach: Boo-for-Teas
  • Yoshi: Hovering Friends
  • Wario: Double-Dealers
  • Daisy: High Spirited Duo
  • Waluigi: Total Creeps
  • Toad: Doom 'n' Shroom
  • Toadette: Boo Duet
  • Birdo: Unfair Pair
  • Dry Bones: Scary Pair
  • Blooper: Creature Feature
  • Hammer Bro: Bad Vibes

Sticker Information

Image	Game	Effect
File:BooTennis64.PNG	Mario Tennis	[Throwing] Attack +14

Trivia

• Boo's Mario Strikers Charged Football outfits resembles the Spooky Speedster's outfit.
• The manual for Mario Kart DS refers to the item Boo as "Boo Hoo".
• Creator Shigeru Miyamoto got the idea for Boo from the wife of his co-worker and close friend Takashi Tezuka, as she is shy but one day got very angry at him for coming home late from work.
• Boo's old laugh is just a sped up version of Bowser's laugh with echoes added.
• Strangely, in Mario Golf: Toadstool Tour, Boo hits right-handed, but in the Mario Baseball series, it hits left-handed.
• In the Animal Crossing games, a character named Wisp appears, who bears a resemblance to Boo. The main difference is the facial appearance, and headgear.
• In Super Mario Sunshine, the Boos are the only Boos that can be defeated by jumping on them outside of the Mario RPG titles.
• Mumbies, enemies from the Kirby series, attack in an identical way to Boos.