Good Boy!— Full Cast

Molly Shannon

as Mrs. Baker

Liam Aiken

as Owen Baker

Matthew Broderick

as Hubble (voice)

Donald Faison

as Wilson (voice)

Cheech Marin

as The Greater Dane's Henchman (voice)

Brittany Murphy

as Nelly (voice)

Vanessa Redgrave

as The Greater Dane (voice)

Carl Reiner

as Shep (voice)

Delta Burke

as Barbara Ann (voice)

Kevin Nealon

as Mr. Baker

Hunter Elliott

as Frankie

Mikhael Speidel

as Fred

Brittany Moldowan

as Connie Fleming

George Touliatos

as Mr. Leone

Patti Allan

as Ms. Ryan