Michelle Williams
Mitzi Fabelman

Paul Dano
Burt Fabelman

Seth Rogen
Benny Loewy

Gabriel LaBelle
Sammy Fabelman

Mateo Zoryan Francis-DeFord
Younger Sammy Fabelman

Keeley Karsten
Natalie Fabelman

Alina Brace
Young Natalie Fabelman

Julia Butters
Reggie Fabelman

Birdie Borria
Younger Reggie Fabelman

Judd Hirsch
Uncle Boris

Sophia Kopera
Lisa Fabelman

Jeannie Berlin
Hadassah Fabelman

Robin Bartlett
Tina Schildkraut

Sam Rechner
Logan Hall

Oakes Fegley
Chad Thomas

Chloe East
Monica Sherwood

Isabelle Kusman
Claudia Denning

Chandler Lovelle
Renee

Gustavo Escobar
Sal

Nicolas Cantu
Hark

Cooper Dodson
Turkey

Gabriel Bateman
Roger

Stephen Matthew Smith
Angelo

James Urbaniak
Grand View High School Principal

Alex Quijano
Grand View High School PE Coach

Kalama Epstein
Barry

Connor Trinneer
Phil Newhart

Lane Factor
Dean

Greg Grunberg
Bernie Fein

David Lynch
John Ford

Jan Hoag
Nona

Carlos Javier Castillo
Camera Store Clerk

Ezra Buzzington
Camera Store Clerk #2

Paul Chepikian
Pinnacle Peak Owner

Brinly Marum
Janet Benedict

Larkin Campbell
Scout Father

Crystal the Monkey
Bennie the Monkey

Art Bonilla
Taxi Driver (uncredited)

Meredith VanCuyk
Student (uncredited)

Vera Myers
Senior Classmate (uncredited)

Cody Mitchell Key
Boy Scout (uncredited)

Julyah Rose
Theater Goer (uncredited)

Ari Davis
Theatre Patron (uncredited)

Jared Becker
Lead Guitarist (uncredited)

Kendal Evans
Balloon Girl (uncredited)

Trang Vo
High School Friend (uncredited)

Alejandro Fuenzalida
Boy Scout (uncredited)

Samantha Rose Gomez
Boy Scout Sibling (uncredited)

Taylor Stone
Senior Classmate (uncredited)

Paige Locke
Cheerleader (uncredited)

Malachi Mickelonis
Student (uncredited)

Max David Weinberg
Student (uncredited)

Cameron Hennings
Student (uncredited)

Nicole Alicia Xavier
Sammy’s Classmate (uncredited)

Seth Fuentes
Student (uncredited)

Jake Kidwell
Volleyball Player (uncredited)

Julian Lerma
Boy Scout in Theater (uncredited)