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 Munoz as Psycho 1

Justin Welborn as Psycho 2

Michelle Wang as Molly

Wilbur Fitzgerald as Financial Guy in Suit

Deborah Duke as Nurse

Nicole Krausen as International Plumber 1

Shankar N. Mahadevan as International Plumber

Brian Beegle as Genaro

Shaun Bowman as Zombie

Keylun Johnson as Herself

Cesar Aguirre as Mechanic Zombie

Grace Baine as Alien (uncredited)

Erin Leigh Bushko as Factory Worker Zombie

Jon Gould as Stand-In / Factory Worker / Mechanic

Jevocas Green as Assembly Line Zombie

Ashley Harvin as Factory Worker Zombie

Shawn Knowles as Zombie Street Hoodlum

Lynn McArthur as Waitress Zombie (uncredited)

Katherine Neslund as Zombie Assembly Line Worker

Bill Pacer as Factory Worker Zombie (uncredited)

Timothy Douglas Perez as Forklift Operator (uncredited)

Sean M. Sellers as Factory Worker Zombie

Sonya Thompson as Factory Worker Zombie

Steve Warren as Factory Worker Zombie

Ken R. Wheeler as Forklift Operator

Erika J. Wood as Factory Working Zombie / Factory Chasing Zombie

Travis Grant as Zombie College Student