William R. Kowalchuk Jr. Director, Producer John Goodman Santa Claus Voice Eric Idle Slyly the Fox Voice Bob Newhart Leonard the Polar Bear Voice Debbie Reynolds Mrs. Claus Voice Richard Simmons Boone Voice Whoopi Goldberg Stormella, The Evil Ice Queen Voice Eric Pospisil Young Rudolph Voice Kathleen Barr Grown-Up Rudolph Voice Michael Aschner Screenwriter Robert May Screenwriter Michael Ellenbogen Executive Producer Andrew Greenberg Executive Producer Seth Willenson Executive Producer Al Kasha Original Music Michael Lloyd Original Music Tom Hok Film Editing Mary Jo Slater Casting