Gloomius Maximus (voice)

James Woods

Spaceboy / Young Dad (voice)

Kyle Fairlie

Pappy / TV Announcer (voice)

Len Carlson

Dad / Gizmo (voice)

Adrian Truss

Young Gizmo (voice)

Michael Cera

Willy Jollie (voice)

Paul Haddad

Wally Jollie (voice)

Juan Chioran

Doctor Geary (voice)

Neil Crone

Baxter (voice)

Philip Williams

Bonita (voice)

Ellen-Ray Hennessy

Binky (voice)

Sunday Muse

Junior Littlegreen (voice)

Jake Goldsbie

Billy Bevel (voice)

Joshua Tucci

Gene Littlegreen (voice)

Richard Binsley

Zowie (voice)

Kristen Bone

Olie (voice)

Cole Caplan

Spot / Spacedog (voice)

Rob Smith

Mom / TV Journalist (voice)

Catherine Disher

Pollie Pi (voice)

Rebecca Brenner

Screwy (voice)

Noah Reid

Wheelie (voice)

Al Mukaddam

Executive Producer

William Joyce

Writer

Nadine Van der Velde

Director

Ron Pitts