When turmoil erupts in the Mario series, Mario, Luigi, and other pokemon arrive to solve the world's problems. Here is a list of heroes and their allies who fight against the Enemies.
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A
- Admiral Bobbery – Paper Mario: The Thousand-Year Door
- Advisor – Mario & Luigi: Superstar Saga
- Alien Bunny – WarioWare, Inc.: Mega Microgame$!
- Ana's Crew – WarioWare, Inc.: Mega Microgame$!
- Angelica – The Super Mario Bros. Super Show!
- Art and Decko – WarioWare: Touched!
- Audience – Paper Mario: The Thousand-Year Door
B
- Baby Bowser – Super Mario World 2: Yoshi's Island
- Baby Daisy – Mario Kart Wii
- Baby Donkey Kong – Yoshi's Island DS
- Baby Luigi – Super Mario World 2: Yoshi's Island
- Baby Mario – Super Mario World 2: Yoshi's Island
- Baby Peach – Mario & Luigi: Partners in Time
- Baby Wario – Yoshi's Island DS
- Baby Yoshi – Super Mario World
- Balloon Bully – Yoshi's Story
- Bandana Blue – Super Mario RPG: Legend of the Seven Stars
- Bandy Andy – Paper Mario: The Thousand-Year Door
- Banktoad – Super Mario Galaxy 2
- Barney Bubble – Super Mario World 2: Yoshi's Island
- Baron von Zeppelin – Super Mario World 2: Yoshi's Island
- Barry – Super Paper Mario
- Beanstalk – Super Mario Bros.
- Belltop – Mario Party 3
- Bestovius – Super Paper Mario
- Big Bad Wolf – The Super Mario Bros. Super Show!
- Big Bertha – Super Mario Bros. (film)
- Big Daddy – Super Mario Sunshine
- Birdo – Super Mario Bros. 2
- Birdo (species) – Super Mario Bros. 2
- Birdley – Mario & Luigi: Bowser's Inside Story
- Blablanadon – Mario & Luigi: Superstar Saga
- Black Yoshi – Yoshi's Story
- Blappy – Super Paper Mario
- Blitties – Mario & Luigi: Bowser's Inside Story
- Blooey – Paper Mario: The Thousand-Year Door
- Blubi – Super Paper Mario
- Blue Paratroopa – Mario & Luigi: Bowser's Inside Story
- Blue Toad – Super Mario Galaxy
- Blue Toad (New Super Mario Bros. Wii) – New Super Mario Bros. Wii
- Blue Yoshi – Yoshi's Story
- Boards – Super Mario Galaxy
- Bob-omb Buddy – Super Mario 64
- Bomberman (character) – Wario Blast: Featuring Bomberman!
- Bomberman (species) – Wario Blast: Featuring Bomberman!
- Bombette – Paper Mario
- Boomer (Super Paper Mario) – Super Paper Mario
- Boomerang Bro. – Super Mario Momotarō
- Bootler – Paper Mario
- Bouncy – Yoshi's Island DS
- Bowser – Super Mario Bros.
- Brighton – Mario Party 6
- Broggy – Mario & Luigi: Bowser's Inside Story
- Broque Madame – Mario & Luigi: Bowser's Inside Story
- Broque Monsieur – Mario & Luigi: Bowser's Inside Story
- Brown Yoshi – Super Mario World 2: Yoshi's Island
- Bubble Plant – Paper Mario
- Bub-ulb – Paper Mario
- Bumpty – Super Mario World 2: Yoshi's Island
- Bunsen – The Super Mario Bros. Super Show!
- Businessman – Paper Mario: The Thousand-Year Door
- Butterfingers – The Super Mario Bros. Super Show!
C
- Cannon Pianta – Super Mario Sunshine
- Captain Abidab – The Super Mario Bros. Super Show!
- Captain Clump – The Super Mario Bros. Super Show!
- Captain Shy Guy – Mario Party 8
- Captain Syrup – Wario Land: Super Mario Land 3
- Carrie – Super Paper Mario
- Chakron – Mario & Luigi: Bowser's Inside Story
- Chancellor – Super Mario RPG: Legend of the Seven Stars
- Chanterelle – Paper Mario
- Cheepy's mother – The Super Mario Bros. Super Show!
- Chet Rippo – Paper Mario
- Chunk – Donkey Kong (Game Boy)
- Cleftor – Paper Mario: The Thousand-Year Door
- Coach – Super Mario Galaxy
- Cork and Cask – Mario & Luigi: Superstar Saga
- Corporal Paraplonk – Mario & Luigi: Bowser's Inside Story
- Cortez – Paper Mario: The Thousand-Year Door
- Cosmic Spirit – Super Mario Galaxy 2
- Co-Star Luma – Super Mario Galaxy 2
- Count Bleck – Super Paper Mario
- Crab – Super Mario: Mario im Wunderland
- Crate Guy – Super Mario Sunshine
- Crimewave Clyde – The Adventures of Super Mario Bros. 3
- Croco – Super Mario RPG: Legend of the Seven Stars
- Cudge – Super Paper Mario
- Cybele – Mario and the Incredible Rescue
- Cyndi Lauper – The Super Mario Bros. Super Show!
- Cyrrus – Super Paper Mario
D
- Daniella – Super Mario Bros. (film)
- Darkly – Paper Mario: The Thousand-Year Door
- Dashell – Super Paper Mario
- Dazzle – Paper Mario: The Thousand-Year Door
- Denpū – Wario Land: Super Mario Land 3
- Diddy Kong – Donkey Kong Country
- Dixie Kong – Donkey Kong Country 2: Diddy's Kong Quest
- Dolphin – Super Mario World
- Don Pianta – Paper Mario: The Thousand-Year Door
- Don the Sparrow – WarioWare, Inc.: Mega Microgame$!
- Donkey Kong – Donkey Kong
- Donkey Kong Jr. – Donkey Kong Junior
- Donny – Nintendo Adventure Books
- Dorrie – Super Mario 64
- Dottie – Super Paper Mario
- Dr. Arewo Stein – Wario Land 4
- Dr. Light – Super Mario: Die Verwandlung
- Doctor Mario – Dr. Mario
- Dr. Nerdnick – The Super Mario Bros. Super Show!
- Dr. Sheldon – The Super Mario Bros. Super Show!
- Dr. T. Garden – The Super Mario Bros. Super Show!
- Dr. Toad – Mario & Luigi: Superstar Saga
- Dr. Toadley – Mario & Luigi: Bowser's Inside Story
- Dr. Toadley's intern – Mario & Luigi: Bowser's Inside Story
- Dr. Toby – The Super Mario Bros. Super Show!
- Dragon – Yoshi's Story
- Dryite – Paper Mario
- Durmite – Mario & Luigi: Bowser's Inside Story
- Dyllis – Super Paper Mario
E
- Einstein – The Super Mario Bros. Super Show!
- Eldstar – Paper Mario
- Elvin Parsley – The Super Mario Bros. Super Show!
- Elvis Presley – The Super Mario Bros. Super Show!
- Ember – Paper Mario
- Emoglobins – Mario & Luigi: Bowser's Inside Story
- Evoglobins – Mario & Luigi: Bowser's Inside Story
- Emperor Ed – The Adventures of Super Mario Bros. 3
- Ernie Hudson – The Super Mario Bros. Super Show!
F
- F.L.U.D.D. – Super Mario Sunshine
- Fahr Outpost Mayor – Paper Mario: The Thousand-Year Door
- Fire God – Mario & Luigi: Superstar Saga
- Thunder God – Mario & Luigi: Superstar Saga
- Fire God (The Super Mario Bros. Super Show!) – The Super Mario Bros. Super Show!
- Fire Mini Mario – Mario vs. Donkey Kong 2: March of the Minis
- Flab Boys – The Super Mario Bros. Super Show!
- Flavio – Paper Mario: The Thousand-Year Door
- Fleep – Super Paper Mario
- Flint Cragley – Super Paper Mario
- Flip-Flop Folk – Super Paper Mario
- Floater – Wario Land: Super Mario Land 3
- Flurrie – Paper Mario: The Thousand-Year Door
- Flutter – Tetris Attack
- Fluzzard – Super Mario Galaxy 2
- Francesca Pianta – Paper Mario: The Thousand-Year Door
- Frankie – Paper Mario: The Thousand-Year Door
- Friendly Floyd – Super Mario Adventures
- Frog – Super Mario RPG: Legend of the Seven Stars
- Frogfucius – Super Mario RPG: Legend of the Seven Stars
G
- Gabbro – Super Paper Mario
- Gardener – Super Mario RPG: Legend of the Seven Stars
- Gargantua Blargg – Tetris Attack
- Garro – Super Mario RPG: Legend of the Seven Stars
- Gary – Super Paper Mario
- Garson – Super Paper Mario
- Gearmo – Super Mario Galaxy
- General White – Paper Mario: The Thousand-Year Door
- Geno – Super Mario RPG: Legend of the Seven Stars
- George Washingtoad – The Super Mario Bros. Super Show!
- Ghost (Super Mario Galaxy 2) – Super Mario Galaxy 2
- Ghost Rider – Yoshi's Story
- Gnaw – Super Paper Mario
- Gnip – Super Paper Mario
- Gold Gearmo – Super Mario Galaxy 2
- Gold Mini Mario – Mario vs. Donkey Kong 2: March of the Minis
- Goldbob – Paper Mario: The Thousand-Year Door
- Goodstyle – Wario: Master of Disguise
- Gooma – Paper Mario
- Goomama – Paper Mario
- Goombario – Paper Mario
- Goombella – Paper Mario: The Thousand-Year Door
- Goompa – Paper Mario
- Goompapa – Paper Mario
- Goomther – Paper Mario: The Thousand-Year Door
- Goose – The Super Mario Bros. Super Show!
- Gourmet Guy – Paper Mario
- Gramma Green – Mario & Luigi: Partners in Time
- Gramma Red – Mario & Luigi: Partners in Time
- Gramps – The Super Mario Bros. Super Show!
- Grandma – Super Mario RPG: Legend of the Seven Stars
- Grandma Toadstool – The Super Mario Bros. Super Show!
- Great Sunflower – Super Mario Sunshine
- Green Yoshi – Super Mario World
- Grifty – Paper Mario: The Thousand-Year Door
- Gull – Wario Land II
H
- Hammer Bro. Captain – Super Paper Mario
- Hammerhead Bros. – Mario & Luigi: Superstar Saga
- Harhall – Mario & Luigi: Superstar Saga
- Harry (The Super Mario Bros. Super Show!) – The Super Mario Bros. Super Show!
- Harry Blackstone Jr. – The Super Mario Bros. Super Show!
- Harry T. – Paper Mario
- Hayzee – Paper Mario: The Thousand-Year Door
- Headless Snowman – Super Mario 64
- Heavy Zed – Super Mario Land 2: 6 Golden Coins
- Hercufleas – The Super Mario Bros. Super Show!
- Herlock Solmes – The Super Mario Bros. Super Show!
- Herringway – Paper Mario
- Hinopio – Super Mario RPG: Legend of the Seven Stars
- Hippo – Super Mario Land 2: 6 Golden Coins
- Hooded Robin – The Super Mario Bros. Super Show!
- Hoot the Owl – Super Mario 64
- Hornfels – Super Paper Mario
- Huffin' Puffin – Super Mario World 2: Yoshi's Island
- Hungry Luma – Super Mario Galaxy
I
J
- Jabble – Paper Mario: The Thousand-Year Door
- Jagger – Super Mario RPG: Legend of the Seven Stars
- Jasperoid – Super Paper Mario
- Jellyfish Sisters – Mario & Luigi: Superstar Saga
- Jerry – Paper Mario: The Thousand-Year Door
- Jibberjay – Super Mario Galaxy 2
- Jinx – Super Mario RPG: Legend of the Seven Stars
- Jolene – Paper Mario: The Thousand-Year Door
- Joliet – The Super Mario Bros. Super Show!
- Jumbo Ray – New Super Mario Bros. Wii
- Jonathan Jones – Super Mario RPG: Legend of the Seven Stars
- Junior – The Adventures of Super Mario Bros. 3
- Juppi – Super Paper Mario
K
- Kalmar – Paper Mario
- Kangaroo – Yoshi's Island DS
- Kersti – Paper Mario: Sticker Star
- Keyzer – Wario Land 4
- King Fret – Yoshi's Safari
- King Grambi – Super Paper Mario
- King James – The Super Mario Bros. Super Show!
- King Neptune – The Super Mario Bros. Super Show!
- King Nimbus – Super Mario RPG: Legend of the Seven Stars
- King Windbag – The Adventures of Super Mario Bros. 3
- Klevar – Paper Mario
- Kolorado – Paper Mario
- Koopa – Mario Party DS
- Koopa Krag – Mario Party DS
- Koopa Master – Mario Party 7
- Kooper – Paper Mario
- Koopley – Paper Mario: The Thousand-Year Door
- Koops – Paper Mario: The Thousand-Year Door
- KP Pete – Paper Mario: The Thousand-Year Door
- Kroop – Paper Mario: The Thousand-Year Door
- Kuzzle – Mario & Luigi: Bowser's Inside Story
- Kylie Koopa – Mario & Luigi: Partners in Time
L
- L33t Hamm3r Broz. – Mario & Luigi: Partners in Time
- Lady Bow – Paper Mario
- Lady Lima – Mario & Luigi: Superstar Saga
- Lakilester – Paper Mario
- Lakilulu – Paper Mario
- Lakitu – Super Mario Bros.
- Lakitu Bros. – Super Mario 64
- Liftoglobins – Mario & Luigi: Bowser's Inside Story
- Light Blue Yoshi – Super Mario World 2: Yoshi's Island
- Lily – Paper Mario
- Little Mouser – Paper Mario
- Lubba – Super Mario Galaxy 2
- Luigi – Mario Bros.
- Luma – Super Mario Galaxy
- Lumpy – Paper Mario: The Thousand-Year Door
- Lunge Fish – Tetris Attack
- Luvbi – Super Paper Mario
M
- Ma' and Pa' Mole – Super Mario RPG: Legend of the Seven Stars
- Madam Merlar – Paper Mario
- Madame Clairvoya – Luigi's Mansion
- Madzilla – The Adventures of Super Mario Bros. 3
- Madzilla's Mom – The Adventures of Super Mario Bros. 3
- Mahgo – Sag niemals Holerö!
- Mailtoad – Super Mario Galaxy
- Mallow – Super Mario RPG: Legend of the Seven Stars
- Mama Fireplant – Super Mario World (television series)
- Mamar – Paper Mario
- Mario – Donkey Kong
- Mark Twang – The Super Mario Bros. Super Show!
- Master Crash – Paper Mario: The Thousand-Year Door
- Master Poet – Paper Mario
- Mayor Dour – Paper Mario: The Thousand-Year Door
- Mayor Penguin – Paper Mario
- Mega Man – Super Mario: Die Bescherung
- Merfle – Wario Land: Shake It!
- Merle – Paper Mario
- Merlee – Paper Mario
- Merlon – Paper Mario
- Merlow – Paper Mario
- Merlumina – Super Paper Mario
- Merluvlee – Paper Mario
- Mervin the Magician – The Super Mario Bros. Super Show!
- Metal Mario – Super Mario 64
- Micro-Dolphin – Unjust Desserts
- Mii – WarioWare: Smooth Moves
- Mimi – Super Paper Mario
- Minh T. – Paper Mario
- Mini Mario – Mario vs. Donkey Kong
- Minister of Massage – Super Mario Adventures
- MIPS – Super Mario 64
- Misaki – The Super Mario Bros. Super Show!
- Miss Warp – Yoshi's Story
- Misstar – Paper Mario
- Mole folk – Super Mario RPG: Legend of the Seven Stars
- Mona's Elephant – WarioWare, Inc.: Mega Microgame$!
- Mona's Monkey – WarioWare, Inc.: Mega Microgame$!
- Mona's Pig – WarioWare, Inc.: Mega Microgame$!
- Monkey – Donkey Kong (Game Boy)
- Monstermama – Super Mario RPG: Legend of the Seven Stars
- Monty Bros. – Mario & Luigi: Bowser's Inside Story
- Monzo – Super Paper Mario
- Moustafa – Paper Mario
- Mouth of the River – The Super Mario Bros. Super Show!
- Mr. Thwomp – Mario & Luigi: Partners in Time
- Ms. Mowz – Paper Mario: The Thousand-Year Door
- Muddy Buddy – Super Mario World 2: Yoshi's Island
- Murphy – The Super Mario Bros. Super Show!
- Mushroom Genie – Mario Party 2
- Mushroom Jeanie – Mario Party 3
- Mushroom King – Nintendo Comics System
- Mushroom Kings – Super Mario Bros. 3
- The Mushroom Marauder and Jake "The Crusher" Fungi – The Adventures of Super Mario Bros. 3
- Mushroom Pilot – The Super Mario Bros. Super Show!
- Mushroom Retainer – Super Mario Bros.
- Mushroom Shop Clerk – Mario Party
- Muskular – Paper Mario
N
- Nastasia – Super Paper Mario
- Neuron – Yoshi's Story
- Nimbus Person – Super Mario RPG: Legend of the Seven Stars
- Ninji – Super Mario Bros. 2
- Nolrem – Super Paper Mario
- Noki Director – Super Mario Sunshine
- Noki Elder – Super Mario Sunshine
- Noki Elder's Grandson – Super Mario Sunshine
- Noki – Super Mario Sunshine
- Nomadimouse – Paper Mario
- Nutsoglobin – Mario & Luigi: Bowser's Inside Story
O
- O'Chunks – Super Paper Mario
- Oaklie – Paper Mario
- Obi-Wan Toadi – The Super Mario Bros. Super Show!
- Ojiisan and Obaasan – Super Mario Momotarō
- Old Man Watchitt – Super Paper Mario
- Oogtar – Super Mario World (television series)
- Orange Yoshi – Super Mario World 2: Yoshi's Island
- Ōsama – BS Super Mario USA
- Owl – Wario Land II
P
- Pa-Patch – Paper Mario: The Thousand-Year Door
- Para-Beetle – Super Mario Momotarō
- Parakarry – Paper Mario
- Partners – Super Mario RPG: Legend of the Seven Stars
- Patches – The Super Mario Bros. Super Show!
- Pauline – Donkey Kong
- Penguin – Super Mario 64
- Penguin Champ – Super Mario 64
- Pennington – Paper Mario: The Thousand-Year Door
- Perry – Super Princess Peach
- Petuni – Paper Mario: The Thousand-Year Door
- Petunia – Paper Mario
- Phantom Hand – New Super Mario Bros.
- Pianta – Super Mario Sunshine
- Piccolo – Super Paper Mario
- Pikmin – Super Smash Bros. Brawl
- Pink Donkey Kong Jr. – Donkey Kong Jr. Math
- Pink Yoshi – Super Mario World 2: Yoshi's Island
- Piper – Mario & Luigi: Superstar Saga
- Pixls – Super Paper Mario
- Podley – Paper Mario: The Thousand-Year Door
- Polari – Super Mario Galaxy
- Poochy – Super Mario World 2: Yoshi's Island
- Posie – Paper Mario
- Power Bee – Yoshi's Story
- Prince Froggy – Tetris Attack
- Prince Haru – Super Mario Bros.: Peach-hime Kyushutsu Dai Sakusen!
- Prince Hugo – The Adventures of Super Mario Bros. 3
- Prince Hugo's Parrot – The Adventures of Super Mario Bros. 3
- Prince Peasley – Mario & Luigi: Superstar Saga
- Prince Pine – Yoshi's Safari
- Princess Daisy – Super Mario Land
- Princess Daisy (film character) – Super Mario Bros. (film)
- Princess Eclair – Paper Mario: The Thousand-Year Door
- Princess Lipid – Mario & Luigi: Bowser's Inside Story
- Princess Peach – Super Mario Bros.
- Princess Shokora – Wario Land 4
- Private Goomp – Mario & Luigi: Bowser's Inside Story
- Private Koopa – Super Paper Mario
- Professor Elvin Gadd – Luigi's Mansion
- Young E. Gadd – Mario & Luigi: Partners in Time
- Professor Frankly – Paper Mario: The Thousand-Year Door
- Professor Fungi – Mario Party 2
- Pronto – The Super Mario Bros. Super Show!
- Psycho Kamek – Mario & Luigi: Superstar Saga
- Pungent – Paper Mario: The Thousand-Year Door
- Puni Elder – Paper Mario: The Thousand-Year Door
- Puni – Paper Mario: The Thousand-Year Door
- Punio – Paper Mario: The Thousand-Year Door
- Puniper – Paper Mario: The Thousand-Year Door
- Purple Yoshi – Super Mario World 2: Yoshi's Island
Q
R
- Space Rabbit – Super Mario Galaxy
- Raphael the Raven – Super Mario World 2: Yoshi's Island
- Raven – Super Mario World 2: Yoshi's Island
- Ray – Super Mario Galaxy
- Rebbi – Super Paper Mario
- Red Yoshi – Super Mario World
- Rip Cheato – Paper Mario
- Romano – The Super Mario Bros. Super Show!
- Rosalina – Super Mario Galaxy
- Rose Town Innkeeper – Super Mario RPG: Legend of the Seven Stars
- Royal Bus Driver – Super Mario RPG: Legend of the Seven Stars
- Russ T. – Paper Mario
S
- Saffron – Super Paper Mario
- Salvador Drainado – The Super Mario Bros. Super Show!
- Sam Shalam – The Super Mario Bros. Super Show!
- Santa Claus – The Super Mario Bros. Super Show!
- Screamy – Paper Mario: The Thousand-Year Door
- Secret Agent N – The Super Mario Bros. Super Show!
- Sergeant Guy – Mario & Luigi: Bowser's Inside Story
- Sergeant Flutter – Super Mario RPG: Legend of the Seven Stars
- Shabba-Doo – The Super Mario Bros. Super Show!
- Shadow the Dog – WarioWare, Inc.: Mega Microgame$!
- Shadow – Paper Mario: The Thousand-Year Door
- Shady Toad – Paper Mario: Sticker Star
- Shuriken the Falcon - WarioWare: Twisted!
- Silver Gearmo – Super Mario Galaxy 2
- Sir Swoop – Paper Mario: The Thousand-Year Door
- Skolar – Paper Mario
- Slammer – The Super Mario Bros. Super Show!
- Slim – Super Paper Mario
- Snake – Yoshi's Story
- Spike (enemy) – Super Mario Momotarō
- Spike (film character) – Super Mario Bros. (film)
- Spine Coaster – New Super Mario Bros. Wii
- Spriteling – Wario World
- Squirps – Super Paper Mario
- Stanley the Bugman – Greenhouse
- Star (species) – Paper Mario
- Star Bunny – Super Mario Galaxy
- Star Children – Yoshi's Island DS
- Star Gate – Mario & Luigi: Partners in Time
- Star Kid – Paper Mario
- Star Sages – Mario & Luigi: Bowser's Inside Story
- Star Spirits – Paper Mario
- Starfy – Mario & Luigi: Superstar Saga
- Starlow – Mario & Luigi: Bowser's Inside Story
- Starshade Bros. – Mario & Luigi: Superstar Saga
- Stool Pigeon – The Super Mario Bros. Super Show!
- Stork – Super Mario World 2: Yoshi's Island
- Stuffwell – Mario & Luigi: Partners in Time
- Subcon – Super Mario Bros. 2
- Submarine Captain – The Adventures of Super Mario Bros. 3
- Sultan – The Adventures of Super Mario Bros. 3
- Sun – Paper Mario
- Sunflower Kid – Super Mario Sunshine
- Sunglasses Vendor – Super Mario Sunshine
- Sushie – Paper Mario
T
- Tadpole – Super Mario RPG: Legend of the Seven Stars
- Tawny Tyler – The Super Mario Bros. Super Show!
- Tayce T. – Paper Mario
- TEC-XX – Paper Mario: The Thousand-Year Door
- Tenshi – WarioWare, Inc.: Mega Microgame$!
- The Creepy Steeple Boo – Paper Mario: The Thousand-Year Door
- Thoreau – Super Paper Mario
- Three Musty Fears – Super Mario RPG: Legend of the Seven Stars
- Thudley – Super Paper Mario
- Tippi – Super Paper Mario
- Tiptron – Super Paper Mario
- Toad – Super Mario Bros.
- Toad (species) – Super Mario Bros.
- Toadbert – Mario & Luigi: Partners in Time
- Toadette – Mario Kart: Double Dash!!
- Toadiko – Mario & Luigi: Partners in Time
- Toadsworth – Super Mario Sunshine
- Toadsworth the Younger – Mario & Luigi: Partners in Time
- Todojewski – Sag niemals Holerö!
- Toad Brigade – Super Mario Galaxy
- Toad in the Desert – Paper Mario
- Toad Minister – Paper Mario
- Torque – Paper Mario: The Thousand-Year Door
- Totemglobin – Mario & Luigi: Bowser's Inside Story
- Traveling Toad – Paper Mario: Sticker Star
- Triplets – Super Mario RPG: Legend of the Seven Stars
- Tumble – Mario Party 3
- Turtle – Wario Land: Super Mario Land 3
- Tuxie's mother – Super Mario 64
- Twila – Mario Party 6
- Twilighter – Paper Mario: The Thousand-Year Door
- Twink – Paper Mario
U
V
W
- Waldo the Wizard – The Super Mario Bros. Super Show!
- Wanda – Mario vs. Wario
- Wandering Nomadimouse – Paper Mario
- Wario – Super Mario Land 2: 6 Golden Coins
- Watt – Paper Mario
- Whacka – Paper Mario
- Whale – Paper Mario
- Whispy Woods – Super Mario: Mario im Wunderland
- White Shy Guy – Yoshi's Story
- White Yoshi – Yoshi's Story
- Whittle – Super Mario Galaxy 2
- Wiggler (Paper Mario: Sticker Star) – Paper Mario: Sticker Star
- Wiggler Segment – Paper Mario: Sticker Star
- Wisdurm – Mario & Luigi: Bowser's Inside Story
- Wise Wisterwood – Paper Mario
- Wizard King of the West – The Adventures of Super Mario Bros. 3
- Wonky – Paper Mario: The Thousand-Year Door
- Woody – Mario Party 2
- Wooster – Nintendo Comics System
- Worm – Super Mario Galaxy
X
Y
- Yebbi – Super Paper Mario
- Yellow Toad – Super Mario Sunshine
- Yellow Toad – New Super Mario Bros. Wii
- Yellow Yoshi – Super Mario World
- Yikk – Mario & Luigi: Bowser's Inside Story
- Yoshi – Paper Mario: The Thousand-Year Door
- Yoshis – Super Mario World
- Yoshi – Super Mario World
- Young McDonald – The Super Mario Bros. Super Show!
- Young Professor Elvin Gadd – Mario & Luigi: Partners in Time