James Pope

Kyle Mooney

Detective Bander

Beck Bennett

Detective Vogel

Greg Kinnear

Ted Mitchum

Mark Hamill

Greg Pope

Matt Walsh

Emily

Claire Danes

Spencer

Jorge Lendeborg Jr.

Louise Pope

Michaela Watkins

Aubrey Pope

Ryan Simpkins

April Mitchum

Jane Adams

Meredith

Alexa Demie

Eric

Andy Samberg

Arielle Smiles

Kate Lyn Sheil

Logan

Chance Crimin

Police Officer

James Anthony Green

Female Reporter

Kimberly Fischer

Female Reporter

Kim Fischer

News Anchor

Kelly Chapman Putzke

News Anchor

Kelly Chapman

Brigsby Bear fan

Nick Rutherford

Reality Talking Head

Reagan Pineda

Young Smiles Sisters

Kiera Hendrix

Young Smiles Sisters

Kiera Milan Hendricks

Coach Brad

Tim Heidecker

Gordo

Rex Morgan

Hannah Slice

Ellery Davidson

FBI Agent

Christopher Sullivan

Space Alien

Joseph Paul Branca

Theatre Patron

Nikolas Mikkelsen

Prison Guard

Matthew P. Watts

Wizzle Prince (uncredited)

Ashlyn Brooke Anderson

Party Guest (uncredited)

Yvonne D Bennett

Nurse (uncredited)

Kami Christiansen

Prison Visitor (uncredited)

Paul Nathan Cuthbert

Premiere Audience (uncredited)

Teresa Duran-Norvick

(uncredited)

Gerry Garcia

Reporter (uncredited)

Angella Joy

Court Reporter (uncredited)

Marilyn Miller

Prison Guard (uncredited)

Chris Provost

Cameraman (uncredited)

Seth Williams

Man Getting Haircut (uncredited)

Julio Torres