Dylan O'Brien

Fred Fitzell

Hannah Gross

Karen

Emory Cohen

Sebastian

Keir Gilchrist

Andre

Maika Monroe

Cindy Williams

Liisa Repo-Martell

Mrs. Fitzell

Amanda Brugel

Evelyn

A.C. Peterson

Mr. MacDonald

Aaron Poole

Pierced Man

Maika Harper

Tattooed Woman

Ian Matthews

Vincent

Donald Burda

Dr. Phillips

Connor Smith

Scarred Man

Jill Frappier

Mrs. Shouldice

Josh Cruddas

Twenty Something Man

Conrad Bergschneider

Male Teacher

Jackie English

Violet

Prince Amponsah

Mysterious Party Goer

Landon Norris

Scarred Man (voice)

Hershel Blatt

Mike (uncredited)