Cast
Starring
Jack Black
R.L. Stine / Slappy (voice) / Invisible Boy (voice)
Dylan Minnette
Zach Cooper
Odeya Rush
Hannah Fairchild
Ryan Lee
Champ
Amy Ryan
Gale Cooper
Jillian Bell
Lorraine Conyers
Halston Sage
Taylor
Steven Krueger
Davidson
Keith Arthur Bolden
Principal Garrison
Amanda Lund
Officer Brooks
