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?
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A
- Albatoss - Super Mario Bros. 2
- Amp - Super Mario 64
- Angry Goomba - Super Prinsess 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
- Atomic Boo - Paper Mario: The Thousand-Year Door
- Axem Rangers - Super Mario RPG: Legend of the Seven Stars
B
- B. Bill Blaster - Paper Mario
- Baby Bowser - Super Mario World 2: Yoshi's Island
- Baby Cheep - Super Mario Bros. 3
- Bahamutt - Super Mario RPG
- Bamma - Paper Mario: The Thousand-Year Door
- Bandit - Super Mario World 2: Yoshi's Island
- Banzai Bill - Super Mario World
- Batadon - Super Mario Land
- Battle Beetle - Super Mario Land 2: 6 Golden Coins
- 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 Bertha (cannon) - Super Mario RPG: Legend of the Seven Stars
- Big Bertha (fish) - Super Mario Bros. 3
- 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
- Biokinton - Super Mario Land
- Birdo - Super Mario Bros. 2
- Blargg - Super Mario World
- Blaster - Super Mario RPG: Legend of the Seven Stars
- Blooper - Super Mario Bros.
- Blooper Nanny - Super Mario Bros. 3
- Blow Hard - Super Mario World 2: Yoshi's Island
- Blue Goomba - Paper Mario
- Blue Koopa Troopa - Super Mario World
- Blurp - Super Mario World
- Bob-Omb - Super Mario Bros. 2
- Bodyguard - Super Mario RPG: Legend of the Seven Stars
- Bonetail - Paper Mario: The Thousand-Year Door
- Bony Beetle - Super Mario World
- Boo - Super Mario Bros. 3
- Bookend - Super Mario 64
- Boolosus -Luigi's Mansion
- Boom Boom - Super Mario Bros. 3
- 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
- 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
- Bub - Super Mario 64
- Bubba - Super Mario 64
- Bullet Bill - Super Mario Bros.
- Bully - Super Mario 64
- Bumpty - Super Mario World 2: Yoshi's Island
- 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
- Buzzy Beetle - Super Mario Bros. 3
C
- Cackletta - Mario & Luigi: Superstar Saga
- 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
- Chainsaw - Super Mario World
- Chan - Paper Mario
- Chargin' Chuck - Super Mario World
- Chill Bully - Super Mario 64
- Chomp - Super Mario Bros. 3
- Chuckolator - Mario & Luigi: Superstar Saga
- Clawgrip - Super Mario Bros. 2
- Cleft - Paper Mario
- Cleftor - Paper Mario: The Thousand-Year Door
- Cloud N. Candy - Yoshi's Story
- Clubba - Paper Mario
- Cobrat - Super Mario Bros. 2
- Cortez - Paper Mario: The Thousand-Year Door
- Crazee Dayzee - Super Mario World 2: Yoshi's Island
- Croco - Super Mario RPG: Legend of the Seven Stars
- 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
- Doctor Topper - Super Mario RPG: Legend of the Seven Stars
- Dodo - Super Mario RPG: Legend of the Seven Stars
- Donkey Kong - Donkey Kong
- Doopliss - Paper Mario: The Thousand-Year Door
- Dr. Freezegood - Super Mario World 2: Yoshi's Island
- Dry Bones - Super Mario Bros. 3
- Duplighost - Paper Mario
E
F
- Factory Chief - Super Mario RPG: Legend of the Seven Stars
- Fang - Super Mario World 2: Yoshi's Island
- Fawful - Mario & Luigi: Superstar Saga
- Fishin' Boo - Super Mario World
- Flare - Paper Mario: The Thousand-Year Door
- Four-Eyes - Paper Mario: The Thousand-Year Door
- Freezie - Mario Bros.
- Fryguy - Super Mario Bros. 2
- Fuzzy - Super Mario World
- Fwoosh - Super Mario 64
G
- General Guy - Paper Mario
- Gloomtail - Paper Mario: The Thousand-Year Door
- Gold Fuzzy - Paper Mario: The Thousand-Year Door
- Golden Diva - Wario Land 4
- Goomba - Super Mario Bros.
- Goomba Bros. - Paper Mario
- Goomba King - Paper Mario
- Gooper Blooper - Super Mario Sunshine
- Grate Guy - Super Mario RPG: Legend of the Seven Stars
- Grindel - Super Mario 64
- Grodus - Paper Mario: The Thousand Year Door
- Grubba - Paper Mario: The Thousand-Year Door
- Guerilla - Super Mario RPG: Legend of the Seven Stars
- Gus - Paper Mario: The Thousand-Year Door
H
I
J
K
- 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 K. Rool - Donkey Kong Country
- 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.
- Koopalings - Super Mario Bros. 3
- Koopatrol - Paper Mario
- Kremlings - Donkey Kong Country
L
M
- Mack - Super Mario RPG: Legend of the Seven Stars
- 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
- 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.)
- Master Necky - Donkey Kong Country
- Mecha Bowser - Super Mario Sunshine
- Megasmilax - Super Mario RPG: Legend of the Seven Stars
- Minister Crepe - Paper Mario: The Thousand-Year Door
- Mom Piranha - Mario & Luigi: Superstar Saga
- Monty Mole - Super Mario World
- Morton Koopa Jr. - Super Mario Bros. 3
- Mouser - Super Mario Bros. 2
- Mr. Blizzard - Super Mario 64
- Mr. I - Super Mario 64
N
- 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
O
P
- Paratroopa - Super Mario Bros.
- Petey Piranha - Super Mario Sunshine
- Phanto - Super Mario Bros. 2
- Pidget - Super Mario Bros. 2
- Piranha Plant - Super Mario Bros.
- Pokey - Super Mario World
- Popple - Mario & Luigi: Superstar Saga
- Prince Froggy - Super Mario World 2: Yoshi's Island
- Princess Shroob - Mario & Luigi: Partners in Time
- Punchinello - Super Mario RPG: Legend of the Seven Stars
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
- Rex - Super Mario World
- Reznor - Super Mario World
- Rip Van Fish - Super Mario World
- Robirdo - Super Mario Advance
- 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
- 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
- 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
- Sir Grodus - Paper Mario: The Thousand-Year Door
- Skeeter - Super Mario 64
- 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
- Snifit - Super Mario Bros. 3
- Snufit - Super Mario 64
- Spark - Super Mario Bros. 2
- Spike - Super Mario Bros. 3
- Spinia - Paper Mario: The Thousand-Year Door
- Spiny - Super Mario Bros.
- Super Blooper - Paper Mario
- Swooper - Super Mario World
T
- 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
- 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
- Tox Box - Super Mario 64
- Toy Tank - Paper Mario
- Triclyde - Super Mario Bros. 2
- Trouter - Super Mario Bros. 2
- Tubba Blubba - Paper Mario
- Tubba's Heart - Paper Mario
- Tutankoopa - Paper Mario
- Tweeter - Super Mario Bros. 2