Canon Characters

[Popple]

General:
Mario
Luigi
Baby Mario
Baby Luigi
Spark the Yoshi*
Blaze the Yoshi*
Freeze the Yoshi*
Bowser
Bowser Jr.
Baby Bowser
Wario
Waluigi
Donkey Kong
Kamek
Kammy
Tatanga
Wart
King Boo

Super Mario RPG:
Mallow
Geno
Mack
Bowyer
Punchinello
Yardiovich
Valentina
Dodo
Axem Red
Axem Black
Axem Green
Axem Pink
Axem Yellow
Exor
Smithy
Croco
Booster

Paper Mario:
Goombario
Kooper
Bombette
Parakarry
Lady Bow
Watt
Sushie
Lakilester
Red Koopa Bro
Black Koopa Bro
Green Koopa Bro
Yellow Koopa Bro
Tutankoopa
Tubba Blubba
General Guy
Lava Piranha
Huff N. Puff
Crystal King

Paper Mario, The 1000-Year Door:
Goombella
Koops
Madame Flurrie
Yoshi Kid
Vivian
Admiral Bobbery
Ms. Mowz
Hooktail
Macho Grubba
Doopliss
Lord Crump
Sir Grodus
Captain Cortez
Shadow Queen

Mario & Luigi, Superstar Saga:
Cackletta
Fawful
Popple
Prince Peasley

Mario & Luigi, Partners in Time:
Kylie Koopa
Princess Shroob
Elder Princess Shroob

Super Paper Mario:
O'Chunks
Fracktail
Mimi
Dimentio
Francis
King Croacus IV
Bonechill
Count Bleck

Note: This list may change at any time. Any character with Strikethrough tags means they are taken. If you see any characters that are not on this list, tell me. Any name colored red is a character that is needed badly.
*: The three Yoshi characters are not canon, but are important to the plot. According to the plot, they are triplets, and have been blessed by the Star Spirits.