Tom Hiddleston

Charles 'Chuck' Krantz

Jacob Tremblay

Charles 'Chuck' Krantz (teen)

Benjamin Pajak

Charles 'Chuck' Krantz (pre-teen)

Cody Flanagan

Charles 'Chuck' Krantz (child)

Nick Offerman

Narrator (voice)

Chiwetel Ejiofor

Marty Anderson

Karen Gillan

Felicia Gordon

Annalise Basso

Janice Halliday

Mia Sara

Sarah Krantz

Mark Hamill

Albie Krantz

Samantha Sloyan

Miss Rohrbacher

Trinity Bliss

Cat McCoy

David Dastmalchian

Josh

Matthew Lillard

Gus

Kate Siegel

Miss Richards

Rahul Kohli

Bri

Harvey Guillén

Hector

Saidah Arrika Ekulona

Andrea

Carl Lumbly

Sam Yarbrough

Taylor Gordon

Taylor Franck

Michael Trucco

Dylan's Dad

Q'orianka Kilcher

Virginia 'Ginny' Krantz

Violet McGraw

Iris

Andrew Grush

Mac

Heather Langenkamp

Vera Stanley

Amy Biedel

Dylan's Mom

Franklin Ritch

Brent

Antonio Raul Garcia

Brian Krantz

Molly C. Quinn

Chuck's Mother

Lily Rose Lumpkin

Clerk

Sauriyan Sapkota

Ram

Mackenzie Gwaltney

Student #2

Anne Russell West

Student #3

Kyler Alan Collvins

Timmy

Mike Flanagan

Mourner

Matt Biedel

Doctor Winston

Carla Gugino

News and Commercial Voice (voice)

Elan Gale

Radio News Reporter (voice)

Eric Vespe

Radio Host #1 (voice)

Scott Wampler

Radio Host #2 (voice)

Hamish Linklater

American Reporter (voice)

Axelle Carolyn

French Reporter (voice)

Sandra Hess

German Reporter (voice)

Alexa Bolter

UK Reporter (voice)

Lauren LaVera

Italian Reporter (voice)

Mikki Levi

Japanese Reporter (voice)

Raymond Garcia

Spanish Reporter (voice)

Trevor Macy

Mourner (uncredited)