Joaquin Phoenix

Johnny

Gaby Hoffmann

Viv

Woody Norman

Jesse

Scoot McNairy

Paul

Molly Webster

Roxanne

Jaboukie Young-White

Fern

Deborah Strang

Carol

Jenny Eliscu

Waitress

Mary Passeri

Behavioral Center Nurse

Beth Bartley

Parade Bystander 2

Keisuke Hoashi

Dr. Hora

Gita Reddy

Dr. Rao

Mya Gonzales

Detroit Kid 1

Sophie Suzuki Shih

New York Interviewee

Leslie Feist

Wah Vocals (voice)

Elaine Kagan

Sarah Klein (uncredited)

Callan Farris

Detroit Kid (uncredited)