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)