Suggestions by @super_wahrrior

Alex Hirsch

as Bill Cipher in The Super Martin Bros. Movie

Chris Pratt

as Gigachad in The Super Martin Bros. Movie

Eric Bana

as The Burger King in The Super Martin Bros. Movie

Dave Chappelle

as Uncle David in The Super Martin Bros. Movie

Dave Chappelle

as Uncle Dave in The Super Martin Bros. Movie

Jim Carrey

as Uncle Jimmy in The Super Martin Bros. Movie

Mariska Hargitay

as Mayor Olivia Benson in The Super Martin Bros. Movie

Bryn McAuley

as Caillou in The Super Martin Bros. Movie

John Morris (III)

as Classic Caillou in The Super Martin Bros. Movie

Kathleen Herles

as Classic Dora in The Super Martin Bros. Movie

Greg Baldwin

as Gigachad Sr. in The Super Martin Bros. Movie

Jenifer Lewis

as Mrs. Martin in The Super Martin Bros. Movie

Morgan Freeman

as Mr. Martin in The Super Martin Bros. Movie

Charles Martinet

as Mario in The Super Martin Bros. Movie

Ian Roberts

as Foreman Ian in The Super Martin Bros. Movie

Elle Key

as Princess Elle in The Super Martin Bros. Movie

Jordan Peele

as Jayden Martin in The Super Martin Bros. Movie

Keegan-Michael Key

as Keaton Martin in The Super Martin Bros. Movie

Randall Duk Kim

as Kami in Dragon Ball Evolution 2

Zendaya

as Amber Davenport in Random High