Jonah Hill Director, Screenwriter, Producer Sunny Suljic Stevie Actor Lucas Hedges Ian Actor Na-kel Smith Ray Actor Gio Galicia Ruben Actor Ryder McLaughlin Fourth Grade Actor Alexa Demie Estee Actor Katherine Waterston Dabney Actor Olan Prenatt F...s... Actor Scott Rudin Producer Eli Bush Producer Ken Kao Producer Lila Yacoub Producer Scott Robertson Executive Producer Jennifer Semler Executive Producer Alex G. Scott Executive Producer Christopher Blauvelt Cinematographer Nick Houy Film Editing Trent Reznor Original Music Atticus Ross Original Music Jahmin Assa Production Design Heidi Bivens Costume Design Allison Jones Casting