List of characters

A

 * Albatoss appears in Super Mario Bros. 2
 * Angry Sun appears in Super Mario Bros. 3

B

 * Baby Bowser
 * Baby Luigi appears in Super Mario World 2: Yoshi's Island
 * Baby Mario appears in Mario Tennis
 * Beezo appears in Super Mario Bros. 2
 * Birdo appears in Super Mario Bros. 2
 * Bloober is an enemy jellyfish character. It appears in Super Mario Bros. and Super Mario Bros.: The Lost Levels.
 * Bob-omb appears in Super Mario Bros. 2, Super Mario Bros. 3, Super Mario 64
 * Bodoboo appears in various titles.
 * Boo appears in Super Mario Bros. 3, Super Mario World, Super Mario RPG, Super Mario World 2: Yoshi's Island, Super Mario 64, Paper Mario, Super Mario Sunshine, Super Mario Kart, Mario Golf, Mario Tennis, Luigi's Mansion, and the Mario Party series
 * Bow the Boo appears in Paper Mario
 * Bowser is the main villain of the series, debuting in Super Mario Bros.
 * Bowser Koopa Junior appears in Mario Party 3
 * Brighton appears in Mario Party 6
 * Bullet Bill appears in Super Mario Bros. and Super Mario Bros. 3

C

 * Cackletta appears in Mario and Luigi: Superstar Saga
 * Chain Chomp appears in Super Mario Bros. 3, Super Mario World 2: Yoshi's Island, Super Mario RPG, Super Mario 64
 * Cheep-Cheep appears in Super Mario Bros.
 * Clawgrip appears in Super Mario Bros. 2

D

 * Diddy Kong appears in Donkey Kong Country, Mario Kart: Double Dash!! and various sports titles.
 * Dixie Kong appears in Donkey Kong Country 2, Mario Superstar Baseball
 * Donkey Kong appears in Mario Kart: Double Dash!! and Mario vs. Donkey Kong
 * Donkey Kong Junior appears in Super Mario Kart

E

 * Eldstar appears in Paper Mario and Mario Party 5

F

 * Fawful appears in Mario and Luigi: Superstar Saga
 * Fire Brothers appear in Super Mario Bros. 3
 * Flurry appears in Super Mario Bros. 2
 * Fryguy appears in Super Mario Bros. 2

G

 * Goomba appears in Super Mario Bros.
 * Goombario appears in Paper Mario
 * Goombella appears in Paper Mario: the Thousand-Year Door

H

 * Hookbill the Koopa appears in Super Mario World 2: Yoshi's Island and Tetris Attack
 * Hothead appears in Super Mario World

I

 * Iggy Koopa appears in Super Mario Bros. 3

K

 * Kamek the Magikoopa appears in Super Mario World 2: Yoshi's Island and various Mario Party titles.
 * King Boo appears in Super Mario Sunshine and Luigi's Mansion.
 * Klaptrap appears in Mario Power Tennis
 * Koopa Kids
 * Koopa Para-Troopa appears in Super Mario Bros.
 * Koopa Paratroopa appears in Super Mario Bros.
 * Koopa Troopa appears in Super Mario Bros.

L

 * Lady Bow appears in Paper Mario
 * Lakilester appears in Paper Mario
 * Lakitu appears in Super Mario Bros.
 * Larry Koopa appears in Super Mario Bros. 3
 * Lemmy Koopa appears in Super Mario Bros. 3
 * Lil' Sparky appears in Super Mario World
 * Ludwig Von Koopa appears in Super Mario Bros. 3
 * Luigi is Mario, the main hero's, brother, and very often the second player in two player games. He first appeared in Mario Bros.

M

 * Mamar apppears in Paper Mario and Mario Party 5
 * Mario is the main hero of the series, debuting in Donkey Kong and first appeared as "Mario" in Mario Bros.
 * Metal Mario is a Metal version of Mario that first appeared in Super Mario 64 and more importantly as a sub boss in Super Smash Bros..
 * MIPS is the armless yellow rabbit that appears in the basement of Peach's Castle in Super Mario 64.
 * Monty Mole appears in Super Mario World, Super Mario 64, Mario Kart 64, and Super Mario Sunshine.
 * Morton Koopa Junior appears in Super Mario Bros. 3
 * Mouser appears in Super Mario Bros. 2
 * Mr. I is a giant eyeball that first appeared in Super Mario 64, where he shot blue laser-type balls and later in Mario Party 2, where he appeared in one of the boards and moved your character around by rolling you across the board. He was mentioned in Mario Golf for the N64 as "Big Mr. I" and later appeared in Super Mario 64 DS. The sign that mentioned Mr. I in level 5 from the original Super Mario 64 was not seen in Super Mario 64 DS. Mr. I recently appeared in the game "Mario Party Advance" for the GBA.

N

 * Ninji appears in Super Mario Bros. 2

P

 * Pauline was Mario's girlfriend in the Donkey Kong Arcade. She is not the same person as Princess Peach.
 * Princess Peach is Mario's lady love, debuting in Super Mario Bros.
 * Petey Piranha appears in Super Mario Sunshine
 * Pidgit appears in Super Mario Bros. 2
 * Pokey appears in Super Mario Bros. 2
 * Princess Daisy appears in Super Mario Land

R

 * Roy Koopa appears in Super Mario Bros. 3

S

 * Shadow Mario appears in Super Mario Sunshine
 * Shadow Peach appears in Paper Mario: The Thousand-Year Door
 * Shy Guy appears in Super Mario Bros. 2
 * Spark appears in Super Mario Bros. 2
 * Sparky appears in Paper Mario
 * Spike appears in Super Mario Bros. 3
 * Spiny appears in Super Mario Bros. and Super Mario Bros. 3

T

 * Tatanga the Mysterious Spaceman appears in Super Mario Land
 * Thwomp appears in Super Mario Bros. 3.
 * Toad, the ever-helpful humanoid mushroom, first appeared in Super Mario Bros.
 * Toadette appears in Mario Kart: Double Dash!!
 * Toadsworth appears in Super Mario Sunshine
 * Tryclyde appears in Super Mario Bros. 2
 * Tweeter appears in Super Mario Bros. 2
 * Twila appears in Mario Party 6

W

 * Waluigi appears in Mario Tennis
 * Wario appears in Super Mario Land 2: 6 Golden Coins
 * Wart appears in Super Mario Bros. 2
 * Watt appears in Paper Mario
 * Wendy O. Koopa appears in Super Mario Bros. 3
 * Wiggler appears in Super Mario World

Y

 * Yoshi, Mario's dinosaur/dragon mount and best friend, debuted in Super Mario World