Jorge Lendeborg Jr.
Spencer
Michaela Watkins
Louise Pope
Greg Kinnear
Detective Vogel
Beck Bennett
Detective Bander
Kate Lyn Sheil
Arielle Smiles
James Anthony Green
Police Officer
Kim Fischer
Female Reporter
Nick Rutherford
Brigsby Bear fan
Reagan Pineda
Reality Talking Head
Kiera Milan Hendricks
Young Smiles Sisters
Ellery Davidson
Hannah Slice
Christopher Sullivan
FBI Agent
Joseph Paul Branca
Space Alien
Nikolas Mikkelsen
Theatre Patron
Matthew P. Watts
Prison Guard
Ashlyn Brooke Anderson
Wizzle Prince (uncredited)
Yvonne D Bennett
Party Guest (uncredited)
Kami Christiansen
Nurse (uncredited)
Paul Nathan Cuthbert
Prison Visitor (uncredited)
Teresa Duran-Norvick
Premiere Audience (uncredited)
Angella Joy
Reporter (uncredited)
Marilyn Miller
Court Reporter (uncredited)
Chris Provost
Prison Guard (uncredited)
Seth Williams
Cameraman (uncredited)
Julio Torres
Man Getting Haircut (uncredited)