In addition to having 64 characters, a number of them have alternate costumes ala Mario Kart Tour.
Blue incidates a newcomer to the Mario Kart series.
- Mario
- Luigi
- Peach
- Toad
- Toadette
- Daisy
- Rosalina & Luma
- Metal Mario
- Cappy
- Pauline
- Bowser
- Dry Bowser
- Bowser Junior
- Goomba
- Koopa Troopa
- Lakithunder
- Hammer Bro.
- Shy Guy
- Birdo
- Boom Boom
- Pom Pom
- The Koopalings (swap out as different sections are reached during a race)
- Monty Mole
- Dry Bones
- Kamek
- Wiggler
- Chargin' Chuck
- King Bob-Omb
- Goomboss
- Petey Piranha
- Madame Broode
- Donkey Kong
- Donkey Kong Jr.
- Diddy Kong
- Dixie Kong
- Funky Kong
- King K. Rool
- Wario
- Waluigi
- Captain Syrup
- Mona
- Orbulon
- Ashley
- Yoshi
- Baby Mario
- Baby Luigi
- Baby Peach
- Baby Daisy
- Nabbit
- Foreman Spike
- MC Ballyhoo
- Paper Mario
- Olivia
- Fawful
- Rookie
- Princess Shroob
- King Boo
- Professor E. Gadd
- Link
- Inkling
- Villager
- R.O.B.
- Kirby
- Mii
Potential DLC Packs
- Welcome to Wario World: Rudy the Clown, Shake King, Merfle
- Blast from the Past: Cranky Kong, Ninji, Wart
- Paper Party: Vivian, Rawk Hawk, Dimentio
- Bring on the Baddies: Renzor, Tatanga, Hellen Gravely
The guest characters would be hidden unlockable bonuses and not shown in promotional material. Shout-outs to Pac-Man and Geno; I wanted to include them in the base roster at first, but I wanted to stick with characters entirely owned by Nintendo.