List of bosses

In video games, bosses are powerful enemies found in levels. They are usually fought at the end of a level, world, or chapter. Most of the time, the player cannot advance to the next level until the boss is defeated. However, there are certain exceptions to this rule. Bosses are usually much more difficult and take more time to defeat than the other enemies in that level or world. There are several types of bosses:


 * Mini-bosses (a.k.a. mid-bosses or sub-bosses) - Bosses that are sometimes found in the middle of a level, world, or chapter, and are usually just upgraded versions of a normal enemy. An example of a mini-boss is Boom Boom.


 * Chapter bosses - Bosses that appear in RPGs at the end of a chapter. An example of a chapter boss is Tutankoopa.


 * Final bosses - Bosses that are fought mostly near the end of a game, and are usually the hardest boss fought in the entire game. Once the final boss or bosses have been defeated, the game is finished. However, there have been times when the game does not immediately end, and the player may need to complete an extra task first (for example, in Mario & Luigi: Superstar Saga). An example of a final boss is Giant Bowser.


 * Optional bosses (a.k.a. superbosses) - Bosses that are most often found in RPGs. They exist in the game, but they do not need to be defeated for the player to beat the game. Sometimes, optional bosses are even harder to defeat than final bosses, as is the case with The Master and Bonetail.

The following is a list of all bosses that appear in the Mario series, with the first game in which they appeared as a boss next to their name. Final bosses are in bold, optional bosses are in italics.

A

 * Akuman – ''Wario's Woods
 * Ancient Poltergeist – ''Luigi's Mansion: Dark Moon
 * Anonster – ''Wario Land 3
 * Antasma– ''Mario & Luigi: Dream Team
 * Antasma X – ''Mario & Luigi: Dream Team
 * Anti Guy – ''Paper Mario
 * Appleby – ''Dr. Mario 64
 * Aqualea – ''Wario's Woods
 * Armored Harriers – ''Paper Mario: The Thousand-Year Door
 * Army Hammer Bro. – ''Super Princess Peach
 * Atomic Boo – ''Paper Mario: The Thousand-Year Door
 * Awabō – Wario Land II
 * Axem Rangers – Super Mario RPG: Legend of the Seven Stars
 * Axem Black
 * Axem Green
 * Axem Pink
 * Axem Red
 * Axem Yellow

B

 * Baby Bowser – ''Super Mario World 2: Yoshi's Island
 * Baron Brrr – ''Super Mario Galaxy
 * Beef Cloud – ''Mario & Luigi: Dream Team
 * Beefne – ''Wario Land: Super Mario Land 3
 * Beetle Whisperer – ''Luigi's Mansion: Dark Moon
 * Beldam – ''Paper Mario: The Thousand-Year Door
 * Belome – ''Super Mario RPG: Legend of the Seven Stars
 * Bessie Bass – ''Yoshi's Island DS
 * Big Blooper – ''Super Paper Mario
 * Big Bob-omb – ''Super Mario 64
 * Big Boo – ''Super Mario World
 * Big Bullet Bill – ''Mario & Sonic at the Olympic Winter Games
 * Big Bully – ''Super Mario 64
 * Big Bungee Piranha – ''Yoshi's Island DS
 * Big Buzzy Beetle – ''Paper Mario: Sticker Star
 * Big Chain Chomp – ''Paper Mario: Sticker Star
 * Big Guy the Stilted – ''Yoshi's Island DS
 * Big Lantern Ghost – ''Paper Mario
 * Big Massif – ''Mario & Luigi: Dream Team
 * Big Mr. I – ''Super Mario 64
 * Big Scuttle Bug – ''Paper Mario: Sticker Star
 * Bigger Boo – ''Super Mario World 2: Yoshi's Island
 * Biokinton – ''Super Mario Land
 * Birdo – ''Super Mario Bros. 2
 * Black Jewel – ''Wario World
 * Blizzard Midbus - ''Mario & Luigi: Bowser's Inside Story
 * Blizzaurus – ''Super Princess Peach
 * Blooper – ''Super Mario Bros.
 * Bobo – ''Wario Land: Super Mario Land 3
 * Bogmire – ''Luigi's Mansion
 * Bomb Brothers – ''Luigi's Mansion: Dark Moon
 * Bonechill – ''Super Paper Mario
 * Bonetail – ''Paper Mario: The Thousand-Year Door
 * Boolossus – ''Luigi's Mansion
 * Boom Boom – ''Super Mario Bros. 3
 * Boomer – ''Super Mario RPG: Legend of the Seven Stars
 * Boomerang Bro. – ''Yoshi's Safari
 * Boomsday Machine – ''Super Mario Galaxy 2
 * Booster – ''Super Mario RPG: Legend of the Seven Stars
 * Boss Sumo Bro. – ''New Super Mario Bros. U
 * Bouldergeist – ''Super Mario Galaxy
 * Bowletta – ''Mario & Luigi: Superstar Saga
 * Bowser – ''Super Mario Bros.
 * Bowser??? – ''Paper Mario
 * Bowser Clone – ''Super Mario RPG: Legend of the Seven Stars
 * Bowser X – ''Mario & Luigi: Bowser's Inside Story
 * Bowser Jr. – ''Super Mario Sunshine
 * Bowser Memory ML – ''Mario & Luigi: Bowser's Inside Story
 * Bowser's Castle – ''Mario & Luigi: Bowser's Inside Story
 * Bowyer – ''Super Mario RPG: Legend of the Seven Stars
 * Box Boy – ''Super Mario RPG: Legend of the Seven Stars
 * Brawl Doll – ''Wario World
 * Brobot – ''Super Paper Mario
 * Brobot L-Type – ''Super Paper Mario
 * Broggy – ''Mario & Luigi: Bowser's Inside Story
 * Broque Monsieur – ''Mario & Luigi: Bowser's Inside Story
 * Bugaboom – ''Super Mario Galaxy
 * Bundt – ''Super Mario RPG: Legend of the Seven Stars
 * Burt Bros. – ''Yoshi's Island DS
 * Burt the Bashful – ''Super Mario World 2: Yoshi's Island
 * Buzzar – ''Paper Mario

C

 * Cackletta – ''Mario & Luigi: Superstar Saga
 * Captain Skull – ''Wario World
 * Captain Syrup – ''Wario Land: Super Mario Land 3
 * Carlton – ''Wario's Woods
 * Chain Chomp – Super Mario Sunshine
 * Chakron – ''Mario & Luigi: Bowser's Inside Story
 * Chan – ''Paper Mario
 * Chargin' Chuck – ''Yoshi's Safari
 * Chauncey – ''Luigi's Mansion
 * Cheep-Cheep – ''Mario Party 9
 * Cheep-Cheep Pufferfish – ''Mario Pinball Land
 * Chef Torte – ''Super Mario RPG: Legend of the Seven Stars
 * Chef Torte's Apprentice – ''Super Mario RPG: Legend of the Seven Stars
 * Cheepskipper – ''New Super Mario Bros.
 * Chester – ''Super Mario RPG: Legend of the Seven Stars
 * Chief Chilly – ''Super Mario 64 DS
 * Chill Bully – ''Super Mario 64
 * Chompy – ''Paper Mario
 * Chucklissa – ''Mario & Luigi: Superstar Saga
 * Chuckolator – ''Mario & Luigi: Superstar Saga
 * Clawgrip – ''Super Mario Bros. 2
 * Clerk – ''Super Mario RPG: Legend of the Seven Stars
 * Cloaker – ''Super Mario RPG: Legend of the Seven Stars
 * Cloud N. Candy – ''Yoshi's Story
 * Cloudjin – ''Yoshi's Story
 * Clown-a-Round – ''Wario World
 * Commander Shroob – ''Mario & Luigi: Partners in Time
 * Cortez – ''Paper Mario: The Thousand-Year Door
 * Count Bleck – ''Super Paper Mario
 * Count Down – ''Super Mario RPG: Legend of the Seven Stars
 * Crazy Hand – ''Super Smash Bros. Melee
 * Creeper Launcher – ''Luigi's Mansion: Dark Moon
 * Croco – ''Super Mario RPG: Legend of the Seven Stars
 * Culex – ''Super Mario RPG: Legend of the Seven Stars
 * Czar Dragon – ''Super Mario RPG: Legend of the Seven Stars

D

 * Dark Bones – ''Paper Mario: The Thousand-Year Door
 * Dark Bowser – ''Mario & Luigi: Bowser's Inside Story
 * Dark Fawful – ''Mario & Luigi: Bowser's Inside Story
 * Dark Fawful Bug – ''Mario & Luigi: Bowser's Inside Story
 * Dark Link – ''Super Smash Bros. Melee
 * Dark Luigi – ''Super Paper Mario
 * Dark Mario – ''Super Paper Mario
 * Dark Peach – ''Super Paper Mario
 * Dark Star – ''Mario & Luigi: Bowser's Inside Story
 * Dark Star Core – ''Mario & Luigi: Bowser's Inside Story
 * De Buu – ''Wario's Woods
 * Dedar – ''Wario's Woods
 * Demon Head – Virtual Boy Wario Land
 * Denpū – ''Wario Land: Super Mario Land 3
 * Digga-Leg – ''Super Mario Galaxy 2
 * Dimentio – ''Super Paper Mario
 * Ding-A-Ling – ''Super Mario RPG: Legend of the Seven Stars
 * Dino Piranha – ''Super Mario Galaxy
 * Dinomighty – ''Wario World
 * Director – ''Super Mario RPG: Legend of the Seven Stars
 * Dodo – ''Super Mario RPG: Legend of the Seven Stars
 * Doll Boy – ''Wario Land 3
 * Domino – ''Super Mario RPG: Legend of the Seven Stars
 * Don Bongo – ''Yoshi's Story
 * Donkey Kong – ''Donkey Kong
 * Doopliss – ''Paper Mario: The Thousand-Year Door
 * Dorago – ''Wario's Woods
 * Dragohoho – ''Mario & Luigi: Superstar Saga
 * Dragonzamasu – ''Super Mario Land
 * Dreamy Bowser – ''Mario & Luigi: Dream Team
 * Dreamy Mario – ''Mario & Luigi: Dream Team
 * Dry Bones – ''Mario Party 9
 * Dry Bowser – ''New Super Mario Bros.
 * Dual Dragon – ''Wario World
 * Duon – ''Super Smash Bros. Brawl
 * Durmite – ''Mario & Luigi: Bowser's Inside Story
 * Durmite X – ''Mario & Luigi: Bowser's Inside Story

E

 * Earth Link – ''Super Mario RPG: Legend of the Seven Stars
 * Earthwake – ''Mario & Luigi: Dream Team
 * Eely-Mouth – Super Mario Sunshine
 * Elder Princess Shroob – ''Mario & Luigi: Partners in Time
 * Elder Shrooboid – ''Mario & Luigi: Partners in Time
 * Electro Blooper – ''Paper Mario
 * Elemental Crystals – ''Super Mario RPG: Legend of the Seven Stars
 * Elite Trio – ''Mario & Luigi: Dream Team
 * Corporal Paraplonk
 * Private Goomp
 * Sergeant Guy
 * Elite Trio X – ''Mario & Luigi: Dream Team
 * Corporal Paraplonk X
 * Private Goomp X
 * Sergeant Guy X
 * Exor – ''Super Mario RPG: Legend of the Seven Stars
 * Eyerok – ''Super Mario 64

F

 * Factory Chief – ''Super Mario RPG: Legend of the Seven Stars
 * False Bowser – ''Super Mario Bros.
 * False Wario – ''Wario's Woods
 * Fautso – ''Super Mario RPG: Legend of the Seven Stars
 * Fawful – ''Mario & Luigi: Superstar Saga
 * Fawful Express – ''Mario & Luigi: Bowser's Inside Story
 * Fire Gobblegut - ''Super Mario Galaxy 2
 * Fire Snake – ''Yoshi's Safari
 * Fiery Dino Piranha - Super Mario Galaxy
 * Foreman Spike – ''Wrecking Crew
 * Fracktail – ''Super Paper Mario
 * Francis – ''Super Paper Mario
 * Freezie – ''Dance Dance Revolution: Mario Mix
 * Fright Knight – ''Luigi's Mansion: Dark Moon
 * Fryguy – ''Super Mario Bros. 2
 * Funfun – Wario Land: Super Mario Land 3
 * Fuzzy – ''Paper Mario
 * Fuzzy Horde – ''Paper Mario: The Thousand-Year Door

G

 * Galrog – ''Wario's Woods
 * Galleom – ''Super Smash Bros. Brawl
 * General Guy – ''Paper Mario
 * Giant Bird – ''Super Mario Land 2: 6 Golden Coins
 * Giant Bowser - ''New Super Mario Bros. Wii
 * Giant Diddy Kong – ''Super Smash Bros. Brawl
 * Giga Bowser – ''Super Smash Bros. Melee
 * Giga Lakitu – ''Super Mario Galaxy 2
 * Gilbert the Gooey – ''Yoshi's Island DS
 * Glamdozer - ''Super Mario Galaxy 2
 * Gloomtail – ''Paper Mario: The Thousand-Year Door
 * Gobblegut – ''Super Mario Galaxy 2
 * Gold Fuzzy – ''Paper Mario: The Thousand-Year Door
 * Golden Diva – ''Wario Land 4
 * Goomboss – ''Paper Mario
 * Gooper Blooper – ''Super Mario Sunshine
 * Goura – ''Wario's Woods
 * Grate Guy – ''Super Mario RPG: Legend of the Seven Stars
 * Green Electro-Koopa – ''Super Mario Sunshine
 * Greenfist – ''Wario World
 * Grobot – ''Mario & Luigi: Dream Team
 * Grobot X – ''Mario & Luigi: Dream Team
 * Grodus X – ''Paper Mario: The Thousand-Year Door
 * Grouchy Possessor – ''Luigi's Mansion: Dark Moon
 * Gunyolk – ''Super Mario RPG: Legend of the Seven Stars
 * Gus – ''Paper Mario: The Thousand-Year Door

H

 * Hammer Bro. – ''Super Mario Bros.
 * Harley Quin – ''Wario's Woods
 * Harry Hare – ''Wario's Woods
 * Harsh Possessor – ''Luigi's Mansion: Dark Moon
 * Hawkmouth – ''Super Mario Bros. 2
 * Heavy Zest – ''Mario & Luigi: Dream Team
 * Hector the Reflector – ''Yoshi's Island DS
 * Helio – ''Wario Land 3
 * Hermie III – ''Mario & Luigi: Superstar Saga
 * Hidon – ''Super Mario RPG: Legend of the Seven Stars
 * Hinyari – ''Wario Land: Super Mario Land 3
 * Hiyoihoi – ''Super Mario Land
 * Hoo – ''Super Princess Peach
 * Hoohoolia – ''Mario & Luigi: Superstar Saga
 * Hoohooros – ''Mario & Luigi: Superstar Saga
 * Hookbill the Koopa – ''Super Mario World 2: Yoshi's Island
 * Hooktail – ''Paper Mario: The Thousand-Year Door
 * Hot Roderick – ''Wario Land: Shake It!
 * Huff N. Puff – ''Paper Mario

I

 * Iggy Koopa – ''Super Mario Bros. 3
 * Inviso – ''Yoshi's Story
 * Ironsider – ''Wario World

J

 * Jagger – ''Super Mario RPG: Legend of the Seven Stars
 * Jamano – Wario Land 3
 * Jinx – ''Super Mario RPG: Legend of the Seven Stars
 * Jonathan Jones – ''Super Mario RPG: Legend of the Seven Stars
 * Jojora – ''Mario & Luigi: Superstar Saga
 * Jr. Troopa – ''Paper Mario
 * Junior Shrooboid – ''Mario & Luigi: Partners in Time
 * Junker – ''Mario & Luigi: Bowser's Inside Story
 * Junker X – ''Mario & Luigi: Bowser's Inside Story

K

 * Kamella – ''Super Mario Galaxy
 * Kamek – ''Super Mario World 2: Yoshi's Island
 * Kammy Koopa – ''Paper Mario
 * Katsini – ''Wario's Woods
 * Kent C. Koopa – Paper Mario
 * King Boo – ''Luigi's Mansion
 * King Boo (Super Mario Sunshine) – ''Super Mario Sunshine
 * King Calamari – ''Super Mario RPG: Legend of the Seven Stars
 * King Croacus IV – ''Super Paper Mario
 * King Kaliente – ''Super Mario Galaxy
 * King Totomesu – ''Super Mario Land
 * King Tut – ''Mario Pinball Land
 * Kingfin – ''Super Mario Galaxy
 * Knife Guy – ''Super Mario RPG: Legend of the Seven Stars
 * Koopa Bros. – ''Paper Mario
 * Red Ninjakoopa
 * Green Ninjakoopa
 * Yellow Ninjakoopa
 * Black Ninjakoopa
 * Koopalings – ''Super Mario Bros. 3
 * Koopa Troopa Sub – ''Yoshi's Safari
 * Kretin – ''Mario & Luigi: Bowser's Inside Story

L

 * L33t Hamm3r Broz. – Mario & Luigi: Partners in Time
 * Lakilester – Paper Mario
 * Lakithunder – New Super Mario Bros.
 * Lakitu – Mario Party 9
 * Larry Koopa – Super Mario Bros. 3
 * Lava Piranha – Paper Mario
 * Lava Bud – Paper Mario
 * Lee – Paper Mario
 * Lemmy Koopa – Super Mario Bros. 3
 * Lizardon – Wario's Woods
 * Lord Crump – Paper Mario: The Thousand-Year Door
 * Ludwig Von Koopa – Super Mario Bros. 3

M

 * Macho Grubba – Paper Mario: The Thousand-Year Door
 * Mack – Super Mario RPG: Legend of the Seven Stars
 * Magikoopa – Yoshi's Cookie
 * Magnus von Grapple/Magnus von Grapple 2.0 – Paper Mario: The Thousand-Year Door
 * Major Burrows – Super Mario Galaxy
 * Mammoshka – Mario & Luigi: Dream Team
 * Mammoshka X – Mario & Luigi: Dream Team
 * Manager – Super Mario RPG: Legend of the Seven Stars
 * Mangylox – Wario's Woods
 * Marching Milde – Super Mario World 2: Yoshi's Island
 * Marilyn – Paper Mario: The Thousand-Year Door
 * Mario – Donkey Kong Jr.
 * Master Hand – Super Smash Bros.
 * Mean Emcee – Wario World
 * Mega Cheep-Cheep – Paper Mario: Sticker Star
 * Mega Goomba – New Super Mario Bros.
 * Megaleg – Super Mario Galaxy
 * Megasmilax – Super Mario RPG: Legend of the Seven Stars
 * Megasparkle Goomba – Paper Mario: Sticker Star
 * Meidou – Wario's Woods
 * Mecha Bowser – Super Mario Sunshine
 * Megahammer - Super Mario Galaxy 2
 * Meta Ridley – Super Smash Bros. Brawl
 * Metal Luigi – Super Smash Bros. Melee
 * Metal Mario – Super Smash Bros.
 * Midbus – ''Mario & Luigi: Bowser's Inside Story
 * Mimi – Super Paper Mario
 * Mini Fryguy – ''Super Mario Bros. 2
 * Mizzter Blizzard; Paper Mario: Sticker Star
 * Moltz the Very Goonie – Yoshi's Island DS
 * Mom Piranha – ''Mario and Luigi: Superstar Saga
 * Monsieur Boo – Wario's Woods
 * Monstar – Paper Mario
 * Monty Mole – Super Mario Sunshine
 * Monty Tank – New Super Mario Bros.
 * Morton Koopa Jr. – Super Mario Bros. 3
 * Mount Pajamaja – Mario & Luigi: Dream Team
 * Mouser – Super Mario Bros. 2
 * Mrs. Thwomp – ''Mario & Luigi: Partners in Time
 * Mr. L – Super Paper Mario
 * Muddee – Wario Land 3
 * Mummipokey – New Super Mario Bros.

N

 * Naval Piranha – Super Mario World 2: Yoshi's Island

O

 * O'Chunks – ''Super Paper Mario
 * Octo – ''Wario Land 3
 * Octopot – ''Yoshi's Safari
 * Octopus – ''Super Mario Land 2: 6 Golden Coins
 * Oholina – ''Mario & Luigi: Superstar Saga
 * Overset Possessor – ''Luigi's Mansion: Dark Moon

P

 * Parrator – ''Wario's Woods
 * Peewee Piranha – ''Super Mario Galaxy 2
 * Pesce – ''Wario Land 3
 * Petey Piranha – ''Super Mario Sunshine
 * Phantamanta – ''Super Mario Sunshine
 * Pi'illodium – ''Mario & Luigi: Dream Team
 * Piranha Bean – ''Mario & Luigi: Superstar Saga
 * Plungelo – ''Super Mario Sunshine
 * Polluted Piranha Plant – ''Super Mario Sunshine
 * Poltergeist – ''Luigi's Mansion: Dark Moon
 * Pom Pom – ''Super Mario 3D Land
 * Porky – ''Super Smash Bros. Brawl
 * Popple – ''Mario & Luigi: Superstar Saga
 * Primordial Goo – ''Luigi's Mansion: Dark Moon
 * Prince Froggy – ''Super Mario World 2: Yoshi's Island
 * Prince Pikante - ''Super Mario Galaxy 2
 * Princess Shroob – ''Mario & Luigi: Partners in Time
 * Priscilla the Peckish – ''Yoshi's Island DS
 * Private Goomp – ''Mario & Luigi: Dream Team
 * Punchinello– ''Super Mario RPG: Legend of the Seven Stars

Q

 * Queen Bean – Mario & Luigi: Superstar Saga

R

 * Raphael the Raven – Super Mario World 2: Yoshi's Island
 * Rawk Hawk – Paper Mario: The Thousand-Year Door
 * Rayquaza –  Super Smash Bros. Brawl
 * Razor – Wario's Woods
 * Red-Brief J – Wario World
 * Reznor – Super Mario World
 * Ricky - Super Mario Land 2: 6 Golden Coins
 * Ridley - Super Smash Bros. Brawl
 * Robirdo – Super Mario Advance
 * Roger the Potted Ghost – Super Mario World 2: Yoshi's Island
 * Rollanratl – ''Wario Land: Shake It!
 * Rollodillo - Super Mario Galaxy 2
 * Rookie – Mario & Luigi: Superstar Saga
 * Roy Koopa – Super Mario Bros. 3
 * Rudy the Clown – Wario Land 3

S

 * Salvo the Slime – Super Mario World 2: Yoshi's Island
 * Sam Spook – Wario's Woods
 * Sarissa – Wario's Woods
 * SandWorm – ''Wario World
 * Scars – ''Luigi's Mansion: Dark Moon
 * Shadoo – Super Paper Mario
 * Shadow Mario – Super Mario Sunshine
 * Shadow Queen – Paper Mario: The Thousand-Year Door
 * Shake King – Wario Land: The Shake Dimension
 * Scutlet – Mario & Luigi: Bowser's Inside Story
 * Sea Pipe Statue – Mario & Luigi: Bowser's Inside Story
 * Sergeant Guy – Mario & Luigi: Dream Team
 * Shiisa – Wario's Woods
 * Shoot – Wario Land 3
 * Shrewd Possessor – Luigi's Mansion: Dark Moon
 * Shrooboid Brat – Mario & Luigi: Partners in Time
 * Shroob-omb – Mario & Luigi: Partners in Time
 * Shroobs – ''Mario & Luigi: Partners in Time
 * Shrowser – Mario & Luigi: Partners in Time
 * Sir Grodus – Paper Mario: The Thousand-Year Door
 * Six-Face Sal – Yoshi's Island DS
 * Sledge Bro. – ''Yoshi's Safari
 * Sluggy the Unshaven – Super Mario World 2: Yoshi's Island
 * Smithy – Super Mario RPG: Legend of the Seven Stars
 * Smoldergeist – ''Mario & Luigi: Dream Team
 * Smorg – Paper Mario: The Thousand-Year Door
 * Snifit – Super Mario RPG: Legend of the Seven Stars
 * Sorbetti – Super Mario Galaxy 2
 * Sorrow Fist – Mario & Luigi: Dream Team
 * Spideraticus – Wario World
 * Spike – Mario Party 9
 * Spike? – Paper Mario
 * Squizzard – Super Mario Galaxy 2
 * Strong Poltergeist; ''Luigi's Mansion: Dark Moon
 * Sunnycide – ''Mario & Luigi: Partners in Time
 * Super Dimentio – Super Paper Mario
 * Super Peach's Castle – ''Mario & Luigi: Bowser's Inside Story
 * Support Shroob – ''Mario & Luigi: Partners in Time
 * Sven – Wario's Woods
 * Swiggler – Mario & Luigi: Partners in Time

T

 * Tabuu – ''Super Smash Bros. Brawl
 * Tad Rock – ''Wario's Woods
 * Tap Tap the Golden – ''Super Mario World 2: Yoshi's Island
 * Tap Tap the Red Nose – ''Super Mario World 2: Yoshi's Island
 * Tarantox – ''Super Mario Galaxy
 * Tatanga – ''Super Mario Land
 * Teeheena – ''Mario & Luigi: Superstar Saga
 * Terrible Teleporter – ''Luigi's Mansion: Dark Moon
 * Terrormisu – ''Wario: Master of Disguise
 * Thak – ''Wario's Woods
 * The Big Boo – ''Super Mario World
 * The Master – ''Paper Mario
 * The Three Little Pigheads – ''Super Mario Land 2: 6 Golden Coins
 * The Three Sisters – ''Luigi's Mansion: Dark Moon
 * Thunder Sass – ''Mario & Luigi: Dream Team
 * Thwomp – ''Yoshi's Cookie
 * Toge Bro. – ''Wario Land: Super Mario Land 3
 * Tolstar – ''Mario & Luigi: Superstar Saga
 * Topmaniac – ''Super Mario Galaxy
 * Torkscrew – ''Mario & Luigi: Dream Team
 * Tough Possessor – ''Luigi's Mansion: Dark Moon
 * Tower of Yikk – ''Mario & Luigi: Bowser's Inside Story
 * Tower Power Pokey – ''Paper Mario: Sticker Star
 * Trunkle – ''Mario & Luigi: Superstar Saga
 * Tryclyde – ''Super Mario Bros. 2
 * Tubba Blubba's Heart – ''Paper Mario
 * Tubba Blubba – ''Paper Mario
 * Tutankoopa – ''Paper Mario

U

 * Underchomp – Super Paper Mario
 * Undergrunt Gunner – Super Mario Galaxy

V

 * Vacuum Helmet – ''Mario & Luigi: Bowser's Inside Story
 * Valentina – ''Super Mario RPG: Legend of the Seven Stars
 * Vivian – ''Paper Mario: The Thousand-Year Door

W

 * Waluigi – Mario Tennis
 * Wario – Super Mario Land 2: 6 Golden Coins
 * Wart – Super Mario Bros. 2
 * Watinga – ''Mario Paint
 * Wendy O. Koopa – Super Mario Bros. 3
 * Whomp – Mario Party 9
 * Whomp King – Super Mario 64
 * Wiggler – Super Mario 64
 * Wiggler (Super Mario Sunshine) – ''Super Mario Sunshine
 * Wiggler Segment – Paper Mario: Sticker Star
 * Wiggly – Mario & Luigi: Dream Team
 * Winter Windster – Wario World
 * Wisdurm – Mario & Luigi: Bowser's Inside Story
 * Wisdurm X – Mario & Luigi: Bowser's Inside Story
 * Witchella – Super Mario Land 2: 6 Golden Coins
 * Wolfenboss – Wario Land 3
 * Wormwould – Wario Land 3
 * Wracktail – Super Paper Mario

Y

 * Yaridovich – Super Mario RPG: Legend of the Seven Stars

Z

 * Zeekeeper – ''Mario & Luigi: Dream Team
 * Zenisukii – ''Wario Land: Super Mario Land 3
 * Zombone – ''Super Mario RPG: Legend of the Seven Stars