Michael Fassbender

Character: Frank

Domhnall Gleeson

Character: Jon Burroughs

Maggie Gyllenhaal

Character: Clara

Scoot McNairy

Character: Don

François Civil

Character: Baraque

Carla Azar

Character: Nana

Tess Harper

Character: Frank's Mom

Bruce McIntosh

Character: Frank's Dad

Hayley Derryberry

Character: Simone

Lauren Poole

Character: Alice

Moira Brooker

Character: Jon's Mother

Paul Butterworth

Character: Jon's Father

Phil Kingston

Character: Radio DJ

Billie Traynor

Character: Café Lady

Shane O'Brien

Character: Lucas

Chris McHallem

Character: Paramedic

Michael James Ford

Character: Port Official

Mark Huberman

Character: Management Guru

Rosalind Adler

Character: German Mother

Niall Glennon

Character: German Father

Torsten Brescanu

Character: German Child

Leroy Harris

Character: Grocery Boy

Noah Hauser

Character: Passerby Austin 1

Laura Love Tode

Character: Passerby Austin 2

Jordyn Aurora Aquino

Character: Hipster Singer

Katie Anne Mitchell

Character: Interview Girl

Paul Howard Smith

Character: Man in Cowboy Hat

Matthew Page

Character: Passerby in Alleyway

Alex Knight

Character: SXSW Driver

Abe Bueno-Jallad

Character: Stage Manager

Morse Bicknell

Character: Driver

Dean Satriano

Character: Young Man in Chinese Restaurant

Peter Trinh

Character: Chinese Restaurant Waiter

Kevin Wiggins

Character: Hillbilly

Travis Hammer

Character: Tree Surgeon

Kelly V. Lucio

Character: SXSW Concert Attendee (uncredited)