Johnny Simmons as Hopper Gibson

Ethan Hawke as Hopper Sr.

Paul Giamatti as Dr. Mobley

Sophie Kennedy Clark as Dorothy Boyer

Alison Elliott as Susan Gibson

Yul Vazquez as Eddie Soler

Paul Adelstein as Scott Borwitz

Marin Ireland as Rachel Cullum

Louisa Krause as Candace Cassidy

Elizabeth Marvel as June Epland

Frank Wood as Richard Boyer

Meg Gibson as Jill Boyer

Emily Fleischer as Betsy Ireland

Journey Smith as Lloyd Moseby

Niesha Butler as Tuesday Davis

Aaron Judlowe as Stan "The Fan" Charles

John Ventimiglia as Red Briles

Steven Marcus as Ernie Jaster