Jack Black

Satan

Kyle Gass

Science Teacher

Keegan-Michael Key

Dr. Finkleman

Ben Stiller

Lucifer (uncredited)

P.J. Byrne

Mr. Charles

Post Malone

Post Malone

Bobby Farrelly

Director

Kevin Barnett

Executive Producer

Hayes MacArthur

Bill Turner

Brianne Howey

Molly Turner

Robert Timothy Smith

Liam Turner

Jaden Carson Baker

Gibby

Kai Cech

Emma

Gavin Munn

Aidan

Cate Freedman

Crossing Guard

Lee Reyes

Lee

Bash Hagelin

Joey

Bryson Dean Haney

Grayson

Lindsay Rootare

Technician

Luke Chiappetta

Jock

Greg Clarkson

Male Newscaster

Maiya Moran

Female Newscaster

Leo Easton Kelly

Spencer

Tierre Turner

Blitzen (voice)

Carole Kaboya

Little Kid’s Mom

Travon McEntyre

Male Nurse

Pete Jones

Executive Producer

Gretel Twombly

Executive Producer