Happy Holidays, Mr. Gruff / The Grandfather Show

April Winchell

(voice)

Spencer Breslin

(voice)

Jeff Bennett

(voice)

Mark Hamill

Birthday Bandit (voice)

Fred Willard

(voice)

Martin Mull

(voice)

Alanna Ubach

(voice)

Jess Harnell

(voice)

Brian Doyle-Murray

(voice)

Joe Alaskey

(voice)

Julia Sweeney

(voice)

Tim Curry

Laser Pirate (voice)

Rachel Crane

(voice)