No doubt you'll encounter some strange creatures in the Mario games. Learn more about the numerous species here! Sub-species are listed under the parent species.
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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
- Amp–Super Mario 64
- Angry Sun–Super Mario Bros. 3
- Anuboo–Mario & Luigi: Superstar Saga
- Arachne–Super Mario RPG: Legend of the Seven Stars
- Artichoker–Super Mario RPG: Legend of the Seven Stars
B
- Bandit–Super Mario World 2: Yoshi's Island
- Banzai Bill–Super Mario World
- Banzai Bill Blaster–Super Mario World
- Barney Bubble–Super Mario World 2: Yoshi's Island
- Bat–Luigi's Mansion
- Batadon–Super Mario Land
- Battle Beetle–Super Mario Land 2: 6 Golden Coins
- Beanie–Mario & Luigi: Superstar Saga
- Beanish–Mario & Luigi: Superstar Saga
- Beanlet–Mario & Luigi: Superstar Saga
- Beezo–Super Mario Bros. 2
- Bill Blaster–Paper Mario
- Blargg–Super Mario World
- Blockhopper–New Super Mario Bros.
- Blooper–Super Mario Bros.
- Blow Hard–Super Mario World 2: Yoshi's Island
- Blue Twirler–Luigi's Mansion
- Blurp–Super Mario World
- Bob-omb–Super Mario Bros. 2
- Bob-omb Buddy–Super Mario 64
- Bogmire Shadow–Luigi's Mansion
- Bopping Toady–Super Mario Land 2: 6 Golden Coins
- Bone Dragon–Yoshi's Story
- Bookend–Super Mario 64
- Boo–Super Mario Bros. 3
- Bowling Ghost–Luigi's Mansion
- Bristle–Paper Mario: The Thousand Year Door
- Bub–Super Mario 64
- Bub-ulb–Paper Mario
- Bucket Head–Super Mario Land 3: Wario Land
- Bullet Bill–Super Mario Bros.
- Bully–Super Mario 64
- Bumpty–Super Mario World 2: Yoshi's Island
- Bunbun–Super Mario Land
- Burt–Super Mario World 2: Yoshi's Island
- Buzzy Beetle–Super Mario Bros.
- Bzzap!–Paper Mario
C
- Cactus Jack–Super Mario World 2: Yoshi's Island
- Caged Ghost–Super Mario World 2: Yoshi's Island
- Carroboscis–Super Mario RPG: Legend of the Seven Stars
- Cataquack–Super Mario Sunshine
- Centipede–Yoshi's Story
- Chargin' Chuck–Super Mario World
- Cheep-Cheep–Super Mario Bros.
- Chicken–Super Mario Land
- Chikako–Super Mario Land
- Chomp–Super Mario Bros. 3
- Chuckya–Super Mario 64
- Clam–Yoshi's Story
- Clawdaddy–Super Mario World 2: Yoshi's Island
- Cleft–Paper Mario
- Cloud Drop–Super Mario World 2: Yoshi's Island
- Clubba–Paper Mario
- Cobrat–Super Mario Bros. 2
- Com Bat–Yoshi's Story
- Crab–Mario Bros.
- Craw–Paper Mario: The Thousand-Year Door
- Crazee Dayzee–Super Mario World 2: Yoshi's Island
- Crowber–New Super Mario Bros.
- Crusty–Super Mario RPG: Legend of the Seven Stars
D
- Dangerous Duck–Super Mario Land 3: Wario Land
- Dangling Ghost–Super Mario World 2: Yoshi's Island
- Dino Rhino–Super Mario World
- Dino-Torch–Super Mario World
- Dizzy Dandy–Super Mario World 2: Yoshi's Island
- Do-Drop–Yoshi's Story
- Dolphin–Super Mario World
- Doogan–Paper Mario
- Dropper–Super Mario Land 3: Wario Land
- Dry Bones–Super Mario Bros. 3
- Dr. Freezegood–Super Mario World 2: Yoshi's Island
- Dune Bud–Super Mario Sunshine
- Duplighost–Paper Mario
E
F
- Fang–Super Mario World 2: Yoshi's Island
- Fighter Fly–Mario Bros.
- Fire Bro–New Super Mario Bros.
- Fire Elemental Ghost–Luigi's Mansion
- Fire Snake–Super Mario Bros. 3
- Fishbone–Super Mario World
- Flitter–Donkey Kong Country 2: Diddy's Kong Quest
- Floater–Super Mario Land 3: Wario Land
- Floating Mine–Super Mario World
- Flopsy Fish–Super Mario World 2: Yoshi's Island
- Flower–Super Mario World 2: Yoshi's Island
- Flurry–Super Mario Bros. 2
- Fly–Super Mario Land
- Freezie–Mario Bros.
- Frogog–Super Mario RPG: Legend of the Seven Stars
- Frog Pirate–Super Mario World 2: Yoshi's Island
- Fuzzy–Super Mario World
- Fuzzy (SMW2)–Super Mario World 2: Yoshi's Island
G
- Gabon–Yoshi's Story
- Gao–Super Mario Land
- Ganchan–Super Mario Land
- Gecko–Super Mario RPG: Legend of the Seven Stars
- Georgette Jelly–Super Mario World 2: Yoshi's Island
- Ghost Rider–Yoshi's Story
- Ghost Stream–Yoshi's Story
- Gira–Super Mario Land
- Glurp–Mario and Luigi: Superstar Saga
- Gnat–Mario Paint
- Goby–Super Mario RPG: Legend of the Seven Stars
- Gold Bowser Statue–Super Mario World
- Goomba–Super Mario Bros.
- Goonie–Super Mario World 2: Yoshi's Island
- Gorgon–Super Mario RPG: Legend of the Seven Stars
- Gray Bowser Statue–Super Mario Bros. 3
- Green Glove–Super Mario World 2: Yoshi's Island
- Grim Leecher–Super Mario World 2: Yoshi's Island
- Grinder–Super Mario World
- Grinder (monkey)–Super Mario World 2: Yoshi's Island
- Grubby–Super Mario Land 2: 6 Golden Coins
- Grunt–Super Mario World 2: Yoshi's Island
- Gulpit–Paper Mario
- Gun Yolk–Super Mario RPG: Legend of the Seven Stars
- Gunion–Super Mario Land
- Gusty–Super Mario World 2: Yoshi's Island
H
- Hammer Bros.–Super Mario Bros.
- Harry Hedgehog–Super Mario World 2: Yoshi's Island
- Hawkmouth–Super Mario Bros. 2
- Heavy Zed–Super Mario Land 3: Wario Land
- Heave-Ho–Super Mario 64
- Helmut–Super Mario Land 3: Wario Land
- Honen–Super Mario Land
- Hoopster–Super Mario Bros. 2
- Hootie the Blue Fish–Super Mario World 2: Yoshi's Island
- Hot Lips–Super Mario World 2: Yoshi's Island
- Hothead–Super Mario World
- Hot Foot–Super Mario Bros. 3
- Human–Donkey Kong
- Hurt Plant–Paper Mario
I
J
K
L
- Lakipea–Mario & Luigi: Superstar Saga
- Lakitu–Super Mario Bros.
- Lantern Ghost–Super Mario World 2: Yoshi's Island
- Lava Bubble–Paper Mario
- Lava Drop–Super Mario World 2: Yoshi's Island
- Lava Lotus–Super Mario Bros. 3
- Lava Piranha–Paper Mario
- Lemon Drop–Super Mario World 2: Yoshi's Island
- Li'l Oinks–Paper Mario
- Li'l Sparky–Super Mario World
- Lock Nestor–Super Mario World 2: Yoshi's Island
- Lunge Fish–Super Mario World 2: Yoshi's Island
M
- M. Bush–Paper Mario
- Magikoopa–Super Mario World
- Mechakoopa–Super Mario World
- Mekabon–Super Mario Land
- Melon Bug–Super Mario World 2: Yoshi's Island
- Milde–Super Mario World 2: Yoshi's Island
- Miss Warp–Yoshi's Story
- Moles–Super Mario RPG: Legend of the Seven Stars
- Mondo Mouth–Super Mario World 2: Yoshi's Island
- Money Bags–Super Mario 64
- Monty Mole–Super Mario World
- Mr. Blizzard–Super Mario 64
- Mr. Eel–Yoshi's Story
- Mr. I.–Super Mario 64
- Muncher–Super Mario Bros. 3
- Munchlesia–Paper Mario
N
- Needlenose–Super Mario World 2: Yoshi's Island
- Nep-Enut–Super Mario World 2: Yoshi's Island
- Neuron–Yoshi's Story
- Ninji–Super Mario Bros. 2
- Nipper Plant–Super Mario Bros. 3
- Noki–Super Mario Sunshine
- Nokobon–Super Mario Land
- Noko Bombette–Super Mario Land 2: 6 Golden Coins
- Nomadimouse–Paper Mario
- Nyololin–Super Mario Land
O
P
- Pak E. Derm–Yoshi's Story
- Panser–Super Mario Bros. 2
- Paratroopa–Super Mario Bros.
- Paratroopea–Mario & Luigi: Superstar Saga
- Peeper–Yoshi's Story
- Penguin–Super Mario World 2: Yoshi's Island
- Penkoon–Super Mario Land 3: Wario Land
- Pianta–Super Mario Sunshine
- Pider–Paper Mario: The Thousand Year Door
- Pidget–Super Mario Bros. 2
- Pionpi–Super Mario Land
- Piranha Plant–Super Mario Bros.
- Phanto–Super Mario Bros. 2
- Plungelo–Super Mario Sunshine
- Podoboo–Mario Bros.
- Pokey–Super Mario Bros. 2
- Pompon Flower–Super Mario Land
- Porcupo–Super Mario Bros. 2
- Porcu-Puffer–Super Mario World
- Preying Mantas- Super Mario World 2: Yoshi's Island
- Puffer–Yoshi's Story
- Puni–Paper Mario: The Thousand Year Door
Q
R
S
- Sandbird–Super Mario Sunshine
- Scuttle Bug–Super Mario 64
- Sea Anemone–Yoshi's Story
- Sea Cactus–Yoshi's Story
- Sharpea–Mario & Luigi: Superstar Saga
- Shell Creeper–Mario Bros.
- Shroob–Mario & Luigi: Partners in Time
- Shy Guy–Super Mario Bros. 2
- Skeeter–Super Mario 64
- Sluggy–Super Mario World 2: Yoshi's Island
- Slugger–Super Mario World 2: Yoshi's Island
- Smorg (species)–Paper Mario: The Thousand Year Door
- Snifit–Super Mario Bros. 2
- Sniper Bill–Mario & Luigi: Superstar Saga
- Snorkel Snake–Yoshi's Story
- Spark–Super Mario Bros. 2
- Spider–Yoshi's Story
- Spike–Super Mario Bros. 3
- Spikey Snifit- Mario & Luigi: Superstar Saga
- Spike Top–Super Mario World
- Spiked Fun Guy–Super Mario World 2: Yoshi's Island
- Spindel–Super Mario 64
- Spindrift–Super Mario 64
- Spinia–Paper Mario: The Thousand Year Door
- Spiny–Super Mario Bros.
- Spiny Fish–Yoshi's Story
- Spray Fish–Super Mario World 2: Yoshi's Island
- Spooky–Super Mario World 2: Yoshi's Island
- Squeek–Super Mario World 2: Yoshi's Island
- Star–Paper Mario
- Subcon–Super Mario Bros. 2
- Suu–Super Mario Land
- Swooper–Super Mario World
T
- Tameo–Super Mario Land
- Tap-Tap–Super Mario World 2: Yoshi's Island
- Teehee Butterfly–Yoshi's Story
- Thwomp–Super Mario Bros. 3
- Trouter–Super Mario Bros. 2
- Toady–Super Mario World 2: Yoshi's Island
- Tokotoko–Super Mario Land
- Torion–Super Mario Land
- Tox Box–Super Mario 64
- Tweeter–Super Mario Bros. 2
- Tweester–Paper Mario
- Twilight Towner–Paper Mario: The Thousand Year Door