Frankly, the Marioverse wouldn't be what it is today without all the greedy, strange, cruel, funny, wild, and sometimes downright evil enemies that make problems for Mario and his allies. Afterall, what is a hero without a villain?
#
A
- Aero – Super Mario RPG: Legend of the Seven Stars
- Air Bag – Yoshi's Story
- Albatoss – Super Mario Bros. 2
- Alley Rat – Super Mario RPG: Legend of the Seven Stars
- Amanita – Super Mario RPG: Legend of the Seven Stars
- Amazing Flying Hammer Brother – Super Mario World
- Amazy Dayzee – Paper Mario
- Ameboid – Super Mario RPG: Legend of the Seven Stars
- Amp – Super Mario 64
- Angry Goomba – Super Princess Peach
- Angry Sun – Super Mario Bros. 3
- Anti Guy – Paper Mario
- Anuboo – Mario & Luigi: Superstar Saga
- Apprentice – Super Mario RPG: Legend of the Seven Stars
- Aqua Lakitu – Super Mario World 2: Yoshi's Island
- Arachne – Super Mario RPG: Legend of the Seven Stars
- Arantula – Paper Mario: The Thousand-Year Door
- Armored Ant – Super Mario RPG: Legend of the Seven Stars
- Artichoker – Super Mario RPG: Legend of the Seven Stars
- Atomic Boo – Paper Mario: The Thousand-Year Door
- Attacky Sack – Yoshi's Story
- Autobomb – Super Mario Bros. 2
- Awazon Genie – Virtual Boy Wario Land
- Axem Rangers – Super Mario RPG: Legend of the Seven Stars
B
- Bombshell Bill Blaster – Paper Mario
- Baby Bowser – Super Mario World 2: Yoshi's Island
- Baby Cheep – Super Mario Bros. 3
- Badge Bandit – Paper Mario: The Thousand-Year Door
- Bald Cleft – Paper Mario: The Thousand-Year Door
- Bahamutt – Super Mario RPG: Legend of the Seven Stars
- Ball n' Chain – Super Mario World
- Balloon Boo – New Super Mario Bros.
- Bamma – Paper Mario: The Thousand-Year Door
- Bandit – Super Mario World 2: Yoshi's Island
- Barney Bubble – Super Mario World 2: Yoshi's Island
- Banzai Bill – Super Mario World
- Bat – Luigi's Mansion
- Batadon – Super Mario Land
- Battle Beetle – Super Mario Land 2: 6 Golden Coins
- Beach Koopa – Super Mario World 2: Yoshi's Island
- Beanie – Mario and Luigi: Superstar Saga
- Beezo – Super Mario Bros. 2
- Beldam – Paper Mario: The Thousand-Year Door
- Belome – Super Mario RPG: Legend of the Seven Stars
- Big & Little Boo – Yoshi's Story
- Big Bandit – Paper Mario: The Thousand-Year Door
- Big Bertha (cannon) – Super Mario RPG: Legend of the Seven Stars
- Big Bertha (fish) – Super Mario Bros. 3
- Big Blue Boo, The – Super Mario World
- Big Boo, The – Super Mario World
- Big Bubble – Super Mario World
- Big Bully – Super Mario 64
- Big Lantern Ghost – Paper Mario
- Big Steely – Super Mario World
- Bigger Boo – Super Mario World 2: Yoshi's Island
- Bill Blaster – Paper Mario
- Biokinton – Super Mario Land
- Birdo – Super Mario Bros. 2
- Birdy – Super Mario RPG: Legend of the Seven Stars
- Black Shy Guy – Yoshi's Story
- Blargg – Super Mario World
- Blaster – Super Mario RPG: Legend of the Seven Stars
- Blockhopper – New Super Mario Bros.
- Blooper – Super Mario Bros.
- Blooper Baby – Paper Mario
- Blooper Nanny – Super Mario Bros. 3
- Blow Hard – Super Mario World 2: Yoshi's Island
- Blue Blurp – Yoshi's Story
- Blue Goomba – Paper Mario
- Blue Koopa Troopa – Super Mario World
- Blurp (Super Mario World) – Super Mario World
- Blurp (Yoshi's Story) – Yoshi's Story
- Bob-Omb – Super Mario Bros. 2
- Bob-ulk – Paper Mario: The Thousand-Year Door
- Bodyguard – Super Mario RPG: Legend of the Seven Stars
- Bogmire – Luigi's Mansion
- Bogmire Shadow – Luigi's Mansion
- Bombshell Bill – Paper Mario
- Bone Dragon – Yoshi's Story
- Bone Dragon Head – Yoshi's Story
- Bonetail – Paper Mario: The Thousand-Year Door
- Bony Beetle – Super Mario World
- Boo – Super Mario Bros. 3
- Boo Balloon – Super Mario World 2: Yoshi's Island
- Bookend – Super Mario 64
- Boolossus – Luigi's Mansion
- Boom Boom – Super Mario Bros. 3
- Boom Guy – Mario & Luigi: Partners In Time
- Boomer – Super Mario RPG: Legend of the Seven Stars
- Boomerang Bros. – Super Mario Bros. 3
- Booster – Super Mario RPG: Legend of the Seven Stars
- Border Bros. – Mario & Luigi: Superstar Saga
- Boshi – Super Mario RPG: Legend of the Seven Stars
- Boss Bass – Super Mario Bros. 3
- Bouncing Bullet Bill – Super Mario World 2: Yoshi's Island
- Bowletta – Mario & Luigi: Superstar Saga
- Bowser – Super Mario Bros.
- Bowser Jr. – Super Mario Sunshine
- Bowyer – Super Mario RPG: Legend of the Seven Stars
- Bristle – Paper Mario: The Thousand-Year Door
- Broozer – New Super Mario Bros.
- Bub – Super Mario 64
- Bubba – Super Mario 64
- Bubble Dayzee – Super Mario World 2: Yoshi's Island
- Bulky Bob–omb – Paper Mario: The Thousand-Year Door
- Bullet Bill – Super Mario Bros.
- Bully – Super Mario 64
- Bumpty – Super Mario World 2: Yoshi's Island
- Bunbun – Super Mario Land
- Bundt – Super Mario RPG: Legend of the Seven Stars
- Burt the Bashful – Super Mario World 2: Yoshi's Island
- Buster Beetle – Super Mario Bros. 3
- Buzzar – Paper Mario
- Buzzer – Super Mario RPG: Legend of the Seven Stars
- Buzzy Beetle – Super Mario Bros. 3
- Bzzap! – Paper Mario
C
- Cackletta – Mario & Luigi: Superstar Saga
- Cactus Jack – Super Mario World 2: Yoshi's Island
- Caged Ghost – Super Mario World 2: Yoshi's Island
- Captain Syrup – Super Mario Land 3: Wario Land
- Candle – Super Mario RPG: Legend of the Seven Stars
- Carroboscis – Super Mario RPG
- Cataquack – Super Mario Sunshine
- Chain Chomp – Super Mario Bros. 3
- Chainsaw – Super Mario World
- Chan – Paper Mario
- Chargin' Chuck – Super Mario World
- Chauncey – Luigi's Mansion
- Cheep-Cheep – Super Mario Bros.
- Cheep-Chomp – New Super Mario Bros.
- Cheepskipper – New Super Mario Bros.
- Chibibo – Super Mario Land
- Chicken – Super Mario Land
- Chikako – Super Mario Land
- Chill Bully – Super Mario 64
- Chomp – Yoshi's Story
- Chomp Bros. – Mario and Luigi: Superstar Saga
- Chomp Chomp – Super Mario RPG: Legend of the Seven Stars
- Chubby – Mario Kart 64
- Chuck Guy – Mario & Luigi: Superstar Saga
- Chuckolator – Mario & Luigi: Superstar Saga
- Chuckya – Super Mario 64
- Clam – Yoshi's Story
- Clawdaddy – Super Mario World 2: Yoshi's Island
- Clawgrip – Super Mario Bros. 2
- Cleft – Paper Mario
- Cleftor – Paper Mario: The Thousand-Year Door
- Clerk – Super Mario RPG: Legend of the Seven Stars
- Cloud Drop – Super Mario World 2: Yoshi's Island
- Cloud N. Candy – Yoshi's Story
- Cloudjin – Yoshi's Story
- Clubba – Paper Mario
- Clumph – Mario and Luigi: Superstar Saga
- Cobrat – Super Mario Bros. 2
- Coin Bandit – Super Mario World 2: Yoshi's Island
- Colossal Paratroopa – Super Mario Bros. 3
- ComBat – Yoshi's Story
- Cortez – Paper Mario: The Thousand-Year Door
- Countdown – Super Mario RPG: Legend of the Seven Stars
- Crab – Mario Bros.
- Crazee Dayzee – Super Mario World 2: Yoshi's Island
- Craw – Paper Mario: The Thousand-Year Door
- Croco – Super Mario RPG: Legend of the Seven Stars
- Crowber – New Super Mario Bros.
- Crystal Bit – Paper Mario
- Crystal King – Paper Mario
- Culex – Super Mario RPG: Legend of the Seven Stars
- Czar Dragon – Super Mario RPG: Legend of the Seven Stars
D
- Dancing Spear Guy – Super Mario World 2: Yoshi's Island
- Dangling Ghost – Super Mario World 2: Yoshi's Island
- Dark Bones – Paper Mario: The Thousand-Year Door
- Dark Boo – Paper Mario: The Thousand-Year Door
- Dark Bristle – Paper Mario: The Thousand-Year Door
- Dark Craw – Paper Mario: The Thousand-Year Door
- Dark Koopa – Paper Mario
- Dark Koopatrol – Paper Mario: The Thousand-Year Door
- Dark Lakitu – Paper Mario: The Thousand-Year Door
- Dark Paratroopa – Paper Mario: The Thousand-Year Door
- Dark Puff – Paper Mario: The Thousand-Year Door
- Dark Wizzerd – Paper Mario: The Thousand-Year Door
- Deep-Cheep – New Super Mario Bros.
- Dino-Rhino – Super Mario World
- Dino-Torch – Super Mario World
- Director – Super Mario RPG: Legend of the Seven Stars
- Dizzy Dandy – Super Mario World 2: Yoshi's Island
- Doctor Topper – Super Mario RPG: Legend of the Seven Stars
- Dr. Freezegood – Super Mario World 2: Yoshi's Island
- Do-Drop – Yoshi's Story
- Dodo – Super Mario RPG: Legend of the Seven Stars
- Dogu – Wrecking Crew '98
- Donkey Kong – Donkey Kong
- Doopliss – Paper Mario: The Thousand-Year Door
- Don Bongo – Yoshi's Story
- Dragohoho – Mario and Luigi: Superstar Saga
- Dragonzamasu – Super Mario Land
- Dry Bones – Super Mario Bros. 3
- Dull Bones – Paper Mario: The Thousand-Year Door
- Duplighost – Paper Mario
E
- Earth Link – Super Mario RPG: Legend of the Seven Stars
- Eeker – Mario and Luigi: Superstar Saga
- Eely Mouth – Super Mario Sunshine
- Eerie – Super Mario World
- Eggplant Man – Wrecking Crew
- Elder Princess Shroob – Mario & Luigi: Partners in Time
- Electro Blooper – Paper Mario
- Ember – Paper Mario
- Elite Troopea – Mario and Luigi: Superstar Saga
- Elite X-Naut – Paper Mario: The Thousand-Year Door
- Enigma – Super Mario RPG: Legend of the Seven Stars
- Exor – Super Mario RPG: Legend of the Seven Stars
- Eyerok – Super Mario 64
F
- Factory Chief – Super Mario RPG: Legend of the Seven Stars
- Fang – Super Mario World 2: Yoshi's Island
- Fat Guy – Super Mario World 2: Yoshi's Island
- Fausto – Super Mario RPG: Legend of the Seven Stars
- Fawful – Mario & Luigi: Superstar Saga
- Fighter Fly – Mario Bros.
- Fink Flower – Super Mario RPG: Legend of the Seven Stars
- Fire Bros. – Super Mario Bros. 3
- Fire Snake – Super Mario Bros. 3
- Fishbones – Super Mario World
- Fishin' Boo – Super Mario World
- Fishin' Lakitu – Super Mario World
- Flame Chomp – Super Mario Bros. 3
- Flamer Guy – Super Mario World 2: Yoshi's Island
- Flare – Paper Mario: The Thousand-Year Door
- Flash – Luigi's Mansion
- Flightless Goonie – Super Mario World 2: Yoshi's Island
- Flightless Skeleton Goonie – Super Mario World 2: Yoshi's Island
- Floating Mine – Super Mario World
- Flopsy Fish – Super Mario World 2: Yoshi's Island
- Flower Fuzzy – Paper Mario: The Thousand Year Door
- Flurry – Super Mario Bros. 2
- Fly – Super Mario Land
- Fly Guy – Super Mario World 2: Yoshi's Island
- Flying Shy Guy – Yoshi's Story
- Flying Goomba – Super Mario World
- Forest Fuzzy – Paper Mario
- Foreman Spike – Wrecking Crew
- Four-Eyes – Paper Mario: The Thousand-Year Door
- Freezie – Mario Bros.
- Frog – Yoshi's Story
- Frog Pirate – Super Mario World 2: Yoshi's Island
- Frost Piranha – Paper Mario
- Fryguy – Super Mario Bros. 2
- Fuzzbush – Mario and Luigi: Superstar Saga
- Fuzzipede – Paper Mario
- Fuzzy – Super Mario World
- Fuzzy (Yoshi's Island) – Super Mario World 2: Yoshi's Island
- Fuzzy Wiggler – Yoshi's Story
- Fwoosh – Super Mario 64
G
- Gabon – Yoshi's Story
- Gao – Super Mario Land
- Ganchan – Super Mario Land
- Gargantua Blargg – Super Mario World 2: Yoshi's Island
- Gargantua Koopa Troopa – Super Mario Bros. 3
- Gecko – Super Mario RPG: Legend of the Seven Stars
- General Guy – Paper Mario
- Georgette Jelly – Super Mario World 2: Yoshi's Island
- Ghost Rider – Yoshi's Story
- Gira – Super Mario Land
- Gloomba – Paper Mario
- Gloomtail – Paper Mario: The Thousand-Year Door
- Glum Rider – Super Mario RPG: Legend of the Seven Stars
- Glurp – Mario and Luigi: Superstar Saga
- Gold Beanie – Mario and Luigi: Superstar Saga
- Gold Bowser Statue – Super Mario World
- Gold Fuzzy – Paper Mario: The Thousand-Year Door
- Gold Ghost – Luigi's Mansion
- Golden Diva – Wario Land 4
- Goomba – Super Mario Bros.
- Goomba Bros. – Paper Mario
- Goomba King – Paper Mario
- Goombette – Super Mario RPG: Legend of the Seven Stars
- Goonie – Super Mario World 2: Yoshi's Island
- Gooper Blooper – Super Mario Sunshine
- Gotcha Wrench – Wrecking Crew
- Grand Goomba – Super Mario Bros. 3
- Grate Guy – Super Mario RPG: Legend of the Seven Stars
- Green Glove – Super Mario World 2: Yoshi's Island
- Grey Bowser Statue – Super Mario Bros. 3
- Grim Leecher – Super Mario World 2: Yoshi's Island
- Grindel – Super Mario 64
- Grinder – Super Mario World 2: Yoshi's Island
- Gritty Goomba – Mario and Luigi: Superstar Saga
- Grodus – Paper Mario: The Thousand Year Door
- Groove Guy – Paper Mario
- Grubba – Paper Mario: The Thousand-Year Door
- Grubby – Super Mario Land 2: Six Golden Coins
- Grunt – Super Mario World 2: Yoshi's Island
- Guerilla – Super Mario RPG: Legend of the Seven Stars
- Gulpit – Paper Mario
- Gunion – Super Mario Land
- Gunner Guy – Mario and Luigi: Superstar Saga
- Gus – Paper Mario: The Thousand-Year Door
- Gusty – Super Mario World 2: Yoshi's Island
H
- Hamma – Paper Mario: The Thousand-Year Door
- Hammer Bros. – Super Mario Bros.
- Harry Hedgehog – Super Mario World 2: Yoshi's Island
- Hawkmouth – Super Mario Bros. 2
- Heave–Ho – Super Mario 64
- Heavy Troopa – Super Mario RPG: Legend of the Seven Stars
- Hefty Goonie – Super Mario World 2: Yoshi's Island
- Hermie III – Mario and Luigi: Superstar Saga
- Hiyoihoi – Super Mario Land
- Hizza – Paper Mario: The Thousand-Year Door (Mentioned)
- Honen – Super Mario Land
- Hoo – Super Princess Peach
- Hoohooros – Mario and Luigi: Superstar Saga
- Hookbill the Koopa – Super Mario World 2: Yoshi's Island
- Hooktail – Paper Mario: The Thousand-Year Door
- Hoopster – Super Mario Bros. 2
- Hootie the Blue Fish – Super Mario World 2: Yoshi's Island
- Hopping Tap-Tap – Super Mario World 2: Yoshi's Island
- Hot Foot – Super Mario Bros. 3
- Hot Lips – Super Mario World 2: Yoshi's Island
- Hothead – Super Mario World
- Huff N. Puff – Paper Mario
- Hurt Plant – Paper Mario
- Hyper Cleft – Paper Mario
- Hyper Goomba – Paper Mario
- Hyper Paragoomba – Paper Mario
- Hyper Spiked Goomba – Paper Mario
I
J
- Jabbit – Super Mario RPG: Legend of the Seven Stars
- Jarvis – Luigi's Mansion
- Jawful – Super Mario RPG: Legend of the Seven Stars
- Jean de Fillet – Super Mario World 2: Yoshi's Island
- Jelectro – Super Mario Bros. 3
- Jelly Ghost – Yoshi's Story
- Jellyfish – Yoshi's Story
- Jester – Super Mario RPG: Legend of the Seven Stars
- Jonathan Jones – Super Mario RPG: Legend of the Seven Stars
- Jumping Piranha Plant – Super Mario World
- Jumping Pumpkin Plant – Super Mario World
- Junior Shrooboid – Mario & Luigi: Partners in Time
- Jr. Troopa – Paper Mario
- Jungle Fuzzy – Paper Mario
K
- K-9 – Super Mario RPG: Legend of the Seven Stars
- Kab-omb – New Super Mario Bros.
- Kaboomba – Super Mario World 2: Yoshi's Island
- KAOS – Donkey Kong Country 3: Dixie Kong's Double Trouble
- Kamek Koopa – Super Mario World 2: Yoshi's Island
- Kammy Koopa – Paper Mario
- Kent C. Koopa – Paper Mario
- King Bob-omb – Super Mario 64
- King Boo – Luigi's Mansion
- King Bowser – Super Mario Bros.
- King Calamari – Super Mario RPG: Legend of the Seven Stars
- King K. Rool – Donkey Kong Country
- King Totomesu – Super Mario Land
- Klepto – Super Mario 64
- Knife Guy – Super Mario RPG: Legend of the Seven Stars
- Koopa Bros. – Paper Mario
- Koopa Kid – Mario Party
- Koopa Troopa – Super Mario Bros.
- Koopa Without a Shell – Super Mario World
- Koopalings – Super Mario Bros. 3
- Koopatrol – Paper Mario
- Kremlings – Donkey Kong Country
- Kumo – Super Mario Land
- Kuribo's Goomba – Super Mario Bros. 3
L
- L33t Hamm3r Broz. – Mario & Luigi: Partners in Time
- Lakipea – Mario & Luigi: Superstar Saga
- Lakitu – Super Mario Bros.
- Lakithunder – New Super Mario Bros.
- Lantern Ghost – Super Mario World 2: Yoshi's Island
- Larry Koopa – Super Mario Bros. 3
- Laser Snifit – Mario & Luigi: Superstar Saga
- Lava Bubble – Super Mario World
- Lava Bud – Paper Mario
- Lava Drop – Super Mario World 2: Yoshi's Island
- Lava Ghost – Yoshi's Story
- Lava Lotus – Super Mario Bros. 3
- Lava Piranha – Paper Mario
- Lee – Paper Mario
- Lemmy Koopa – Super Mario Bros. 3
- Lemon Drop – Super Mario World 2: Yoshi's Island
- Li'l Sparky – Super Mario World
- Limbo Bro – Mario and Luigi: Superstar Saga
- Limbo Guy – Yoshi's Story
- Little Mouser – Super Mario World 2: Yoshi's Island
- Loch Nestor – Super Mario World 2: Yoshi's Island
- Lord Crump – Paper Mario: The Thousand-Year Door
- Ludwig Von Koopa – Super Mario Bros. 3
- Lunge Fish – Super Mario World 2: Yoshi's Island
M
- Mace Guy – Super Mario World 2: Yoshi's Island
- Macho Grubba – Paper Mario: The Thousand-Year Door
- Mack – Super Mario RPG: Legend of the Seven Stars
- Mad Adder – Super Mario RPG: Legend of the Seven Stars
- Mad Piano – Super Mario 64
- Mad Scienstein – Wario Land 3
- Magikoopa – Super Mario World
- Magnus Von Grapple Robots – Paper Mario: The Thousand-Year Door
- Malibut – Mario and Luigi: Superstar Saga
- Manager – Super Mario RPG: Legend of the Seven Stars
- Manta – Super Mario 64
- Manta Storm – Super Mario Sunshine
- Marching Milde – Super Mario World 2: Yoshi's Island
- Marilyn – Paper Mario: The Thousand-Year Door
- Mario – Donkey Kong (Mario was the main villain of Donkey Kong Jr.)
- Mask Koopa – Super Mario World
- Master Necky – Donkey Kong Country
- Mecha-Blooper – Mario and Luigi: Superstar Saga
- Mecha Bowser – Paper Mario
- Mecha-Chomp – Mario and Luigi: Superstar Saga
- Mechakoopa – Super Mario World
- Medi Guy – Paper Mario
- Mega Cheep-Cheep – New Super Mario Bros.
- Mega Deep-Cheep – New Super Mario Bros.
- Mega Goomba – New Super Mario Bros.
- Mega Mole – Super Mario World
- Mega Unagi – New Super Mario Bros.
- Megasmilax – Super Mario RPG: Legend of the Seven Stars
- Mekabon – Super Mario Land
- Minister Crepe – Paper Mario: The Thousand-Year Door (Mentioned)
- Missile Bill – Super Mario Bros. 3
- Miss Petunia – Luigi's Mansion
- Mom Piranha – Mario & Luigi: Superstar Saga
- Moneybags – Super Mario 64
- Mini Goomba – New Super Mario Bros.
- Mock Up – Super Mario World 2: Yoshi's Island
- Monstar – Paper Mario
- Monster Bush – Paper Mario
- Monty Mole – Super Mario World
- Monty Tank – New Super Mario Bros.
- Morton Koopa Jr. – Super Mario Bros. 3
- Mouser – Super Mario Bros. 2
- Mr. Blizzard – Super Mario 64
- Mr. Big I – Super Mario 64
- Mr. I – Super Mario 64
- Mr. Luggs – Luigi's Mansion
- Mufti Guy – Super Mario World 2: Yoshi's Island
- Mugger Micro–Goomba – Super Mario Bros. 3
- Mummipokey – New Super Mario Bros.
- Muncher – Super Mario Bros. 3
N
- Naval Bud – Super Mario World 2: Yoshi's Island
- Naval Piranha – Super Mario World 2: Yoshi's Island
- Needlenose – Super Mario World 2: Yoshi's Island
- Nep-Enut – Super Mario World 2: Yoshi's Island
- Ninja – Super Mario RPG: Legend of the Seven Stars
- Ninji – Super Mario Bros. 2
- Nipper Plant – Super Mario Bros. 3
- Noko Bombette – Super Mario Land 2: 6 Golden Coins
- Nokobon – Super Mario Land
- Nyololin – Super Mario Land
O
- Octolot – Super Mario RPG: Legend of the Seven Stars
- Octovader – Super Mario RPG: Legend of the Seven Stars
- Oerlikon – Super Mario RPG: Legend of the Seven Stars
- Onigiri – Wrecking Crew '98
- Onnanoko – Wrecking Crew '98
- Orb User – Super Mario RPG: Legend of the Seven Stars
- Orbison – Super Mario RPG: Legend of the Seven Stars
- Ostro – Super Mario Bros. 2
- Oucher Glass – Mario and Luigi: Superstar Saga
- Oyazi – Wrecking Crew '98
P
- Pak E. Derm – Yoshi's Story
- Panser – Super Mario Bros. 2
- Parabeanie – Mario & Luigi: Superstar Saga
- Parabuzzy – Super Mario Bros. 3
- Paragloomba – Paper Mario
- Paragoomba – Super Mario Bros. 3
- Paratroopa – Super Mario Bros.
- Paratroopea – Mario & Luigi: Superstar Saga
- Peeper – Yoshi's Story
- Pestnut – Mario and Luigi: Superstar Saga
- Petey Piranha – Super Mario Sunshine
- Petit Piranha – Paper Mario
- Phanto – Super Mario Bros. 2
- Pider – Paper Mario: The Thousand Year Door
- Pidgit – Super Mario Bros. 2
- Pidgit Bill – Super Mario World
- Pink Boo – Super Mario Sunshine
- Piranha Bean – Mario and Luigi: Superstar Saga
- Piranha Pest – Yoshi's Story
- Piranha Plant – Super Mario Bros.
- Piranha Sprout – Yoshi's Story
- Piranhacus Giganticus – Super Mario Bros. 3
- Pirate Guy – Yoshi's Story
- Plungelo – Super Mario Sunshine
- Podoboo – Super Mario Bros.
- Pogo Guy – Yoshi's Story
- Poison Pokey – Paper Mario: The Thousand Year Door
- Pokey – Super Mario World
- Pokey Mummy – Paper Mario
- Popple – Mario & Luigi: Superstar Saga
- Porcupo – Super Mario Bros. 2
- Prince Froggy – Super Mario World 2: Yoshi's Island
- Princess Shroob – Mario & Luigi: Partners in Time
- Ptooie – Super Mario Bros. 3
- Punchinello – Super Mario RPG: Legend of the Seven Stars
- Purple Puncher – Luigi's Mansion
Q
R
- Raphael the Raven – Super Mario World 2: Yoshi's Island
- Raven – Super Mario World 2: Yoshi's Island
- Rawk Hawk – Paper Mario: The Thousand-Year Door
- Really Gnawty – Donkey Kong Country
- Red and Blue Goomba – Paper Mario
- Red Bones – Paper Mario: The Thousand-Year Door
- Rex – Super Mario World
- Reznor – Super Mario World
- Rip Van Fish – Super Mario World
- Robirdo – Super Mario Advance
- Rocky Wrench – Super Mario Bros. 3
- Roger the Potted Ghost – Super Mario World 2: Yoshi's Island
- Roto-Disc – Super Mario Bros. 3
- Roy Koopa – Super Mario Bros. 3
- Rudy the Clown – Wario Land 3
- Ruff Puff – Paper Mario
S
- Salvo the Slime – Super Mario World 2: Yoshi's Island
- Scaratroopea – Mario & Luigi: Superstar Saga
- Scuttle Bug – Super Mario 64
- Shadow Mario – Super Mario Sunshine
- Shadow Queen – Paper Mario: The Thousand-Year Door
- Shadow Sirens – Paper Mario: The Thousand-Year Door
- Sharpea – Mario & Luigi: Superstar Saga
- Shellcreeper – Mario Bros.
- Shroobs – Mario & Luigi: Partners in Time
- Shy Away – Super Mario RPG: Legend of the Seven Stars
- Shy Guy – Super Mario Bros. 2
- Shy Guy Army – Paper Mario
- Shyper – Super Mario RPG: Legend of the Seven Stars
- Shyster – Super Mario RPG: Legend of the Seven Stars
- Sidestepper – Mario Bros.
- Sir Grodus – Paper Mario: The Thousand-Year Door
- Sir Weston – Luigi's Mansion
- Skeeter – Super Mario 64
- Sledge Bros. – Super Mario Bros. 3
- Slim Bankshot – Luigi's Mansion
- Sluggy the Unshaven – Super Mario World 2: Yoshi's Island
- Smelter – Super Mario RPG: Legend of the Seven Stars
- Smithy – Super Mario RPG: Legend of the Seven Stars
- Smithy Gang – Super Mario RPG: Legend of the Seven Stars
- Smorg – Paper Mario: The Thousand-Year Door
- Snailicorn – New Super Mario Bros.
- Snifit – Super Mario Bros. 3
- Snow Spike – New Super Mario Bros.
- Snufit – Super Mario 64
- Spark – Super Mario Bros. 2
- Spike – Super Mario Bros. 3
- Spike Bass – New Super Mario Bros.
- Spike Top – Super Mario World
- Spikey Snifit – Mario & Luigi: Superstar Saga
- Spinia – Paper Mario: The Thousand-Year Door
- Spiny – Super Mario Bros.
- Splunkin – New Super Mario Bros.
- Spooky – Luigi's Mansion
- Squiggler – New Super Mario Bros.
- Stretch – Super Mario Bros. 3
- Sue Pea – Luigi's Mansion
- Sumo Bro – Super Mario World
- Super Blooper – Paper Mario
- Super Dry Bones – New Super Mario Bros.
- Super Koopa – Super Mario World
- Super Piranha Plant – New Super Mario Bros.
- Super Thwomp – New Super Mario Bros.
- Super Whomp – New Super Mario Bros.
- Sushi – Super Mario 64
- Swooper – Super Mario World
- Sworm – Mario & Luigi: Superstar Saga
T
- Tanoomba – Mario & Luigi: Superstar Saga
- Tap-Tap – Super Mario World 2: Yoshi's Island
- Tap-Tap the Golden – Super Mario World 2: Yoshi's Island
- Tap-Tap the Red Nose – Super Mario World 2: Yoshi's Island
- Tatanga – Super Mario Land
- Temper Terror – Luigi's Mansion
- The Black Jewel – Wario World
- Thunder Lakitu – Super Mario World 2: Yoshi's Island
- Thwack – Mario & Luigi: Partners in Time
- Thwimp – Super Mario World
- Thwomp – Super Mario Bros. 3
- Toadies – Super Mario World 2: Yoshi's Island
- Tolstar – Mario & Luigi: Superstar Saga
- Torion – Super Mario Land
- Torpedo Ted – Super Mario World
- Tox Box – Super Mario 64
- Toy Tank – Paper Mario
- Triclyde – Super Mario Bros. 2
- Troopea – Mario & Luigi: Superstar Saga
- Trouter – Super Mario Bros. 2
- Tubba Blubba – Paper Mario
- Tubba's Heart – Paper Mario
- Tutankoopa – Paper Mario
- Tweeter – Super Mario Bros. 2
U
V
W
- Wall Lakitu – Super Mario World 2: Yoshi's Island
- Waluigi – Mario Tennis
- Wario – Super Mario Land 2: 6 Golden Coins
- Wart – Super Mario Bros. 2
- Wendy O. Koopa – Super Mario Bros. 3
- Whomp – Super Mario 64
- Whomp King – Super Mario 64
- Wiggler – Super Mario World
- Wigglerfly – Super Mario World 2: Yoshi's Island
- Wizzerd – Paper Mario: The Thousand-Year Door