Tara Strong

Ben Tennyson (voice)

Meagan Moore

Gwen Tennyson (voice)

Paul Eiding

Grandpa Max (voice)

Dee Bradley Baker

Stinkfly / Wildmutt (voice)

Jim Ward

Diamondhead / XLR8 (voice)

Steve Blum

Ghostfreak / Heatblast / Vilgax (voice)

Richard McGonagle

Four Arms (voice)

Fred Tatasciore

Cannonbolt / Ripjaws (voice)

Richard Steven Horvitz

Grey Matter (voice)

Khary Payton

Hex (voice)

Richard Doyle

Enoch (voice)

Dwight Schultz

Dr. Animo (voice)

Charlie Schlatter

Kevin Levin (voice)

Vanessa Marshall

Diamond Head Gwen / Four Arms Gwen (voice)

Jennifer Hale

Teacher / Jamie (voice)

Tom Kane

Ultimos (voice)

Kim Mai Guest

Andy (voice)

Kath Soucie

Edwin (voice)

Kari Wahlgren

Grey Matter Gwen (voice)

Adam Wylie

Bullie #2 (voice)