Merry Christmas

Tara Strong

Ben Tennyson (voice)

Meagan Moore

Gwen Tennyson (voice)

Ashley Johnson

Gwen Tennyson

Charlie Schlatter

Kevin Levin

Paul Eiding

Grandpa Max (voice)

Meagan Smith

Gwen Tennyson

Dwight Schultz

Dr. Animo

Dee Bradley Baker

Stinkfly / Wildmutt (voice)

Steve Blum

Ghostfreak / Heatblast / Vilgax (voice)

Greg Cipes

Richard McGonagle

Four Arms (voice)

Greg Ellis

Jeff Bennett

Richard Steven Horvitz

Grey Matter (voice)

Jim Ward

Diamondhead / Wildvine / XLR8 (voice)

Fred Tatasciore

Cannonbolt (voice)

John DiMaggio

Baron Highway

Kevin Michael Richardson

Michael Dorn

Dr. Vicktor

Peter Renaday

Richard Green

Benmummy

Kevin Conroy

Rob Paulsen

Ditto

Robin Atkin Downes

Jonah Melville

Tom Kane

Ultimos

Vicki Lewis

Jennifer Hale

Rojo

Kari Wahlgren

Charmcaster

Khary Payton

Hex

Yuri Lowenthal

Richard Doyle

Mr. Jingles (voice)

Kim Mai Guest

Elsgood / Grandkid / Kid #1 (voice)