Ben 10: Alien Swarm— Full Cast

Ryan Kelley

as Ben Tennyson

Galadriel Stineman

as Gwen Tennyson

Nathan Keyes

as Kevin E. Levin

Alyssa Diaz

as Elena Validus

Herbert Siguenza

as Victor Validus

Barry Corbin

as Grandpa Max Tennyson

Dee Bradley Baker

as Big Chill / Humongousaur (voice)

Alex Winter

as Nanomech (voice)

Wendy Cutler

as Alien Chip Queen (voice)

Joyce Kurtz

as Computer (voice)

Patrick Cox

as Big Ed

Jeremy DeCarlos

as Helio

Eric Mendenhall

as Fitz

Tony Larkin

as Ship-It Clerk

Aaron Muñoz

as Psycho 1