Madeleine Kelders Mario (voice) John David Washington Princess Peach (voice) Laci Mosley Luigi (voice) Robin Torkar Bowser (voice) Karimah Westbrook Toad (voice) James Corden Donkey Kong (voice) Walt Flanagan Cranky Kong (voice) Diam's Spike (voice) Geoffrey Gould Mario's Dad / Giuseppe (voice) Ariana Greenblatt Kamek (voice) Seth Gilliam Penguin King (voice) Richard Allan Jones Uncle Tony (voice) Pierre Coffin Uncle Arthur (voice) Lex Lang Mario's Mom (voice) Lindsay Hartley Toad General (voice) Tara Strong Koopa General (voice) David Herman Additional Voices (voice) David Hornsby Additional Voices (voice) Charles Martinet Additional Voices (voice) Mindy Sterling Additional Voices (voice) Brad Ableson Additional Voices (voice) Rino Romano Additional Voices (voice) Vince Mattis Additional Voices (voice) Jessica Green Additional Voices (voice) Sam Lavagnino Additional Voices (voice) Ashley Gardner Additional Voices (voice) Rachel Butera Additional Voices (voice) Ángeles Cruz Additional Voices (voice) Willow Geer Additional Voices (voice) Jeremy Maxwell Additional Voices (voice) Missi Pyle Additional Voices (voice) Noreen Reardon Additional Voices (voice) Lee Shorten Additional Voices (voice)