Jack Black

R.L. Stine / Slappy (voice) / Invisible Boy (voice)

Bruce Berman

Executive Producer

Rob Letterman

Director

Keith Arthur Bolden

Principal Garrison

Ben Waisbren

Executive Producer

Karan Soni

Mr. Rooney

Ken Marino

Coach Carr

Ryan Lee

Champ

Dylan Minnette

Zach Cooper

Timothy Simons

Officer Stevens

Amanda Lund

Officer Brooks

Jillian Bell

Lorraine Conyers

Greg Basser

Executive Producer

Amy Ryan

Gale Cooper

Tania Landau

Executive Producer

Bill Bannerman

Executive Producer

Odeya Rush

Hannah Fairchild

Halston Sage

Taylor

Steven Krueger

Davidson

R.L. Stine

Hallway Player

Caleb Emery

Dumb Jock

Gabriela Hernandez

Screaming Girl

Nate Andrade

Monster

Sheldon Brown

Monster

Melissa Brewer

Monster

Marshall Choka

Monster

Melissa Cowan

Monster

John Deifer

Monster

Everett Dixon

Monster

Brian Gabriel

Monster