Ty Simpkins
Dalton Lambert
Patrick Wilson
Josh Lambert
Sinclair Daniel
Chris Winslow
Hiam Abbass
Professor Armagan
Andrew Astor
Foster Lambert
David Call
Smash Face / Ben Burton
Steve Coulter
Carl
Peter Dager
Nick the Dick
Rose Byrne
Renai Lambert
Lin Shaye
Elise Rainier
Juliana Davies
Kali Lambert
Joseph Bishara
Lipstick Demon
Angus Sampson
Tucker
Leigh Whannell
Specs
Justin Sturgis
Alec Anderson
Stephen Gray
Sick Kid
Robin S. Walker
Supervisor Robbins
Bridget Kim
Sorority Girl #1
Logan Wilson
Paige
Kasjan Wilson
Young Dalton / Young Josh
Mary Looram
Mourner
Adrian Acosta
Frat Boy #1
AJ Dyer
Frat Bro #2
Kalin Wilson
Server Frat Boy
E. Roger Mitchell
Dr. Bower
Dagmara Dominczyk
Priest (voice)
Tom Toland
Student (credit only)
Elaine Apruzzese
Pedestrian / Driver (uncredited)
Suki Úna Rae
Art Student (uncredited)
Desi Ramos
Student (uncredited)
Victorya Danylko-Petrovskaya
Sorority Girl (uncredited)