Sonic x Mario: Two Worlds Collide

Voice cast

 * Ben Schwartz as Sonic the Hedgehog, an anthropomorphic blue hedgehog who can run at supersonic speeds, but cannot swim. He wants to use his powers to help others but is brash and irresponsible.
 * Chris Pratt as Mario, a struggling Italian-American plumber from Brooklyn, New York in his universe.
 * Colleen O'Shaughnessey as Miles "Tails" Prower, an anthropomorphic yellow-orange fox who can fly with his twin-tails.
 * John Leguizamo as Luigi, Mario's timid younger brother and fellow plumber.
 * Idris Elba as Knuckles the Echidna, an anthropomorphic red echidna warrior with super strength. He is serious, aggressive, and quick-tempered, but has a strong sense of honor.
 * Seth Rogen as:
 * Donkey Kong, an anthropomorphic gorilla and heir to the throne of the Jungle Kingdom.
 * Big the Cat, a large yet gentle anthropomorphic purple cat with yellowish eyes.
 * Jack Black as:
 * Vector the Crocodile, a loud-mouthed and easygoing anthropomorphic green crocodile who is the leader of Team Chaotix and one of Sonic's friends.
 * Bowser, the King of the Koopas, who rules the Dark Lands and teams up with Dr. Eggman.
 * Bowser Jr, the son of Bowser and heir to the throne of the Dark Lands.
 * Kevin Michard Richardson as:
 * Kamek, a Koopa sorcerer and Bowser's advisor and informant.
 * Mecha Sonic, the second robotic replica of Sonic created by Dr. Eggman, after Metal Sonic.

Live-action cast

 * Jim Carrey as Dr. Robotnik, a mad scientist and Sonic's arch-nemesis who he often refers to as "Eggman". After being defeated by Sonic the Hedgehog, he later teams up with Bowser.