Full Cast — Ben 10 (2005–2008)

Tara Strong

Ben Tennyson (voice)

Meagan Moore

Gwen Tennyson (voice)

Paul Eiding

Grandpa Max (voice)

Dee Bradley Baker

Stinkfly / Wildmutt (voice)

Steve Blum

Ghostfreak / Heatblast / Vilgax (voice)

Richard McGonagle

Four Arms (voice)

Jim Ward

Diamondhead / Wildvine / XLR8 (voice) / Diamondhead / XLR8 (voice)

Richard Steven Horvitz

Grey Matter (voice)

Fred Tatasciore

Ripjaws (voice) / Cannonbolt / Ripjaws (voice) / Cannonbolt (voice) / Ripjaws / Krakken (voice)

Khary Payton

Convict #1 (voice) / Teen #1 (voice) / Hex (voice) / Automated Voice (voice) / Foreman / Forever Knight #1 (voice)

Richard Doyle

Dr. Shueman (voice) / Enoch (voice) / Mr. Jingles (voice)

Dwight Schultz

Earl (voice) / Dr. Animo (voice)

Charlie Schlatter

Kevin Levin (voice)

Jennifer Hale

Gilbert / Mandy (voice) / Teacher / Jamie (voice) / Joey (Rojo) (voice)

Kari Wahlgren

Grey Matter Gwen (voice) / Charmcaster (voice)

Tom Kane

Ultimos (voice) / Donovan (voice)

Vanessa Marshall

Diamond Head Gwen / Four Arms Gwen (voice) / Female Cannonbolt / Policewoman (voice) / Tini (voice)

Kim Mai Guest

Pinky / Kid (voice) / Elsgood / Grandkid / Kid #1 (voice) / Andy (voice)

Kath Soucie

Little Boy / Tiffany (voice) / Joan / Teen #2 / Cowgirl (voice) / Edwin (voice)

Cree Summer

Frightwig (voice)

Jeff Doucette

Thumbskull (voice)

Billy West

Guard / Punk #2 (voice) / Kraab (voice)

Dave Fennoy

Radio Newscaster / Doctor (voice) / Hoverboard (voice)

Nancy Linari

Automated Voice (voice) / Tour Guide / Reporter / Screaming Woman (voice)

Adam Wylie

JT (voice) / Bullie #2 (voice)

Grey DeLisle

Xylene (voice) / Heatblast Gwen (voice)

Dave Wittenberg

Upchuck (voice) / Harold / Escape Artist / Emcee (voice)

Michael Dorn

Vicktor (voice)