Danny DeVito

as Cathkart

Brie Larson

as Suzy Decker

Katey Sagal

as Mom

Skyler Stone

as Quinn

Caitlin Crosby

as Sarah

Ryan Hansen

as Elliot Cathkart

Thomas F. Wilson

as Fire Chief Henry Decker

Tony Yalda

as Gilroy

Matthew Glave

as Hector

Kiernan Shipka

as Daughter Camper

Adam Herschman

as Shirtless Boy

Parvesh Cheena

as Zerban

Michael Bofshever

as Husband Camper

Corryn Cummins

as Wife Camper

Nick Nervies

as Brando

Quan Rico

as Buster

John Farley

as Nate the Store Manager

Jessica Harper

as DWP Clerk

Gregory Hinton

as Carl the Enormous Tranny

John S. McClellan

as Pierced Man w / Puppet

Christine Nguyen

as Brunette Hottie

Tabitha Taylor

as Blondie Hottie

Shannon Holt

as Parent

Raphael Lachs

as Delivery Man

Drew Matthews

as Apartment Kid

Ashlee Abrams

as Cheerleader

Vanessa Celso

as Angry Woman

Stephanie Katz

as Cheerleader

Joe Koons

as Trail

Ashley Rose

as Cheerleader

Jessica Harper

as DWP Clerk