Brian T. Delaney

Young Tom Popper, Sr. (voice)

Jim Carrey

Mr. Popper

David Krumholtz

Kent

Madeline Carroll

Janie

Jeffrey Tambor

Mr. Gremmins

Philip Baker Hall

Franklin

Angela Lansbury

Mrs. Van Gundy

William Charles Mitchell

Yates

Clark Gregg

Nat Jones

Carla Gugino

Amanda

Joel Gotler

Executive Producer

Mark Waters

Director

Ophelia Lovibond

Pippi

Derek Dauchy

Executive Producer

Jeff Lima

Freddy

Dominic Colón

Tito

Kelli Barrett

Tommy's Mom

Maxwell Perry Cotton

Billy

James Tupper

Rick

Dominic Chianese

Reader

Henry Kelemen

Young Tommy Popper

Dylan Clark Marshall

Young Tommy Popper #2

Elaine Kussack

Gremmins's Secretary

Harlin C. Kearsley

Town Car Driver

Desmin Borges

Daryl

Lee Moore

Reginald

Frank Ciornei

Klaus

Jessica Tuchinsky

Executive Producer