Ryan Kelley

Ben Tennyson

Galadriel Stineman

Gwen Tennyson

Nathan Keyes

Kevin E. Levin

Alyssa Diaz

Elena Validus

Herbert Siguenza

Victor Validus

Barry Corbin

Grandpa Max Tennyson

Dee Bradley Baker

Big Chill / Humongousaur

Patrick Cox

Big Ed

Jeremy DeCarlos

Helio

Eric Mendenhall

Fitz

Tony Larkin

Ship-It Clerk

Aaron Munoz

Psycho 1

Justin Welborn

Psycho 2

Deborah Duke

Nurse

Wilbur Fitzgerald

Financial Guy in Suit

Brian Beegle

Genaro

Keylun Johnson

Herself

Shankar N. Mahadevan

International Plumber

Wendy Cutler

Alien Chip Queen (voice)

Alex Winter

Nanomech (voice)

Joyce Kurtz

Computer (voice)

Grace Baine

Alien (uncredited)

Lynn McArthur

Waitress Zombie (uncredited)

Travis Grant

Zombie College Student (uncredited)

Bill Pacer

Factory Worker Zombie (uncredited)

Timothy Douglas Perez

Forklift Operator (uncredited)

Sonya Thompson

Factory Worker Zombie (uncredited)

Steve Warren

Factory Worker Zombie (uncredited)