Ethan Hawke as James Sandin

Lena Headey as Mary Sandin

Max Burkholder as Charlie Sandin

Adelaide Kane as Zoey Sandin

Edwin Hodge as Bloody Stranger

Rhys Wakefield as Polite Leader

Tony Oller as Henry

Arija Bareikis as Mrs. Grace Ferrin

Tom Yi as Mr. Cali

Chris Mulkey as Mr. Halverson

Tisha French as Mrs. Halverson

Dana Bunch as Mr. Ferrin

Peter Gvozdas as Dr. Peter Buynak

John Weselcouch as Freak Interrupting

Alicia Vela-Bailey as Female Freak

David Basila as George (uncredited)

Boima Blake as Freak #1 (uncredited)

Nathan Clarkson as Freak (uncredited)

Jesse Jacobs as Freak #2 (uncredited)

Mickey Facchinello as Brunette Female Freak (uncredited)

Crystal Lockhart as Freak (uncredited)

Tyler Osterkamp as Freak (uncredited)

RJ Wolfe as Freak (uncredited)

Aaron Kuban as Freak (uncredited)

Karen Strassman as Newscaster (uncredited)

Cindy Robinson as Purge Screen Announcer (uncredited)