Jimmy Bennett
Toby Thompson
Jake Short
Nose Noseworthy
Kat Dennings
Stacy Thompson
Trevor Gagnon
Loogie Short
Devon Gearhart
Cole Black
Jolie Vanier
Helvetica Black
Rebel Rodriguez
Lug Short
Leo Howard
Laser Short
Leslie Mann
Mom Thompson
Jon Cryer
Dad Thompson
William H. Macy
Dr. Noseworthy
James Spader
Carbon Black
Angela Lanza
Teacher
Alejandro Rose-Garcia
John / Boyfriend
Cambell Westmoreland
Blinker #1
Zoe Webb
Blinker #2
Chris Orf
Goofy Host
Racer Rodriguez
Bully #1
Rocket Rodriguez
Bully #2
John Chilleri
Hallway Kid (uncredited)
Josh Christman
Classroom Kid (uncredited)
Joshua Drew
Classmate (uncredited)
Zach Irsik
Schoolyard Kid (uncredited)
Ryan Lee
Classmate / Neighborhood Kid (uncredited)
Christina Lehner
Classmate (uncredited)
Micaela Phillips
Girl on Bus (uncredited)
Bella Perryman
Classmate (uncredited)
Cameron R. Murphy
Neighborhood Kid
Henry J. Smith 3rd
Neighborhood Kid (uncredited)
Cameron Wofford
(uncredited)
Alexis Woods
Schoolyard Kid (uncredited)
Tina Rodriguez
Female Employee
Jackson Hurst
Male Employee
Jonathan Breck
Security Guard
Elizabeth Avellan
The Baby (voice)
Bianca Rodriguez
The Baby
Sheilava
Partygoer (uncredited)