Frank Welker
The Monster (voice)
Michael Bell
Dr. Frankenstein (voice)
Dee Bradley Baker
Tour Guide (voice)
Kevin Michael Richardson
Bud Wiley (voice)
Ross Bagdasarian, Jr.
Alvin Seville / Simon Seville / Dave Seville (voice)
Mary Kay Bergman
Mother (voice)
Janice Karman
Theodore Seville (voice)
Jim Meskimen
Mr. Yesman (voice)