Full cast of Fanboy and Chum Chum

Nika Futterman

Chum Chum (voice)

100 episodes

Jamie Kennedy

Kyle (voice)

100 episodes

Wyatt Cenac

Michael Johnson (voice) / Lenny (voice)

100 episodes

David Hornsby

Fanboy (voice) / Fanbot (voice)

100 episodes

Jeff Bennett

Mr. Muffin (voice) / Duke / Mr. Muffin / Scrivener Elf (voice) / Boog (voice) / Fedora Man (voice) / Hank (voice) / Mr. Muffin / Stinks (voice) / Dollar-nator (voice)

100 episodes

Josh Duhamel

Oz (voice)

5 episodes

Steve Tompkins

Janitor Poopatine (voice)

3 episodes

Dyana Liu

Yo (voice)

3 episodes

Estelle Harris

Oz's Mom (voice) / Mrs. Harmounian (voice)

3 episodes

Dee Bradley Baker

Scampers (voice) / Mecha-Tech (voice)

2 episodes

Candi Milo

Francine / Lupe / Mrs. Cram (voice)

1 episode

John DiMaggio

Yum Yum (voice)

1 episode

Kari Wahlgren

Nancy / Cher (voice)

1 episode

Kevin Michael Richardson

Berry (voice)

1 episode

Don Newhouse

Himself

1 episode

Joe Hursley

President

1 episode