I'm Not Here

J.K. Simmons

Steve

Sebastian Stan

Steve

Maika Monroe

Karen

Mandy Moore

Mom

Max Greenfield

Dad

Iain Armitage

Stevie

Harold Perrineau

Santana

Jeremy Maguire

Trevor

David Wexler

Adam

David Koechner

Dad's Attorney

Heather Mazur

Mom's Attorney

Tony Cummings

Judge