Yuri Lowenthal

Ben Tennyson (voice)

Ashley Johnson

Gwen Tennyson (voice)

Greg Cipes

Kevin Levin (voice)

Tim Curry

Dr. Chadwick / Knight #2 (voice)

Vicki Lewis

Serena (voice)

Kevin Conroy

Bellicus / Warrior 2 (voice)

Scott Menville

JT (voice)

Ioan Gruffudd

Devin Levin / Robot Guard (voice)

Wil Wheaton

Darkstar (voice)

John DiMaggio

Rath (voice)

Alexander Polinsky

Argit (voice)

Kamali Minter

Trina / Zombie Girls (voice)

Kim Mai Guest

Lucy / Zombie Girls (voice)

Diane Delano

Edna / DNAlien #1 (voice)

Will Friedle

Ken / Shem (voice)

Rob Paulsen

Alien Pilot / Cotton Candy Vendor / Patrolman (voice)

Richard McGonagle

HighBreed / Forever Knight #5 / Sensei (voice)

Zeno Robinson

Alan (Heatblast II) (voice)