Gloomius Maximus (voice)

James Woods

Spaceboy / Young Dad (voice)

Kyle Fairlie

Zowie (voice)

Kristen Bone

Olie (voice)

Cole Caplan

Billy Bevel (voice)

Joshua Tucci

Screwy (voice)

Noah Reid

Pappy / TV Announcer (voice)

Len Carlson

Mom / TV Journalist (voice)

Catherine Disher

Spot / Spacedog (voice)

Rob Smith

Bonita (voice)

Ellen-Ray Hennessy

Spot

Robert Smith

Dad / Gizmo (voice)

Adrian Truss

Pollie Pi (voice)

Rebecca Brenner

Baxter (voice)

Philip Williams

Wheelie (voice)

Al Mukadam

Young Gizmo (voice)

Michael Cera

Willy Jollie (voice)

Paul Haddad

Wally Jollie (voice)

Juan Chioran

Doctor Geary (voice)

Neil Crone

Binky (voice)

Sunday Muse

Junior Littlegreen (voice)

Jake Goldsbie

Gene Littlegreen (voice)

Richard Binsley