Tara Strong

Ben Tennyson (voice)

Meagan Moore

Gwen Tennyson (voice)

Paul Eiding

Grandpa Max (voice)

Richard McGonagle

Four Arms (voice)

Robert David Hall

Azmuth (voice)

Fred Tatasciore

Cannonbolt / Way Big (voice)

Vanessa Marshall

Myaxx / Salesperson (voice)

Dwight Schultz

Dr. Animo (voice)

Steve Blum

Vilgax / Heatblast / Nightmarish Alien / Alien Fly Prisoner (voice)

Jim Ward

XLR8 / Ripjaws Prisoner / Incarcecon Security (voice)

Dee Bradley Baker

Robotic Lt / Wildmutt / Gluto / Eye Guy / Alien Prisoner #1

Richard Steven Horvitz

Grey Matter / Stinkfly Prisoner (voice)

Dave Wittenberg

Upchuck / Alien #2 (voice)

Dave Fennoy

Tetrax / Alien #1 / Alien Prisoner #2 (voice)