Special Guest Stars Craig T. Nelson as Dale Ballard Bob Newhart voices Professor Proton Guest Stars Wallace Shawn as Dr. John Sturgis Wyatt McClure as Billy Sparks J. Doc Farrow as Wayne Wilkins Rex Linn as Principal Tom Peterson Brian Stepanek as Mr. Hubert Givens Danielle Pinnock as Ms. Evelyn Ingram Valerie Mahaffey as Ms. Victoria MacElroy Co Starring Alfred Adderly as Victor Uncredited Kaley Cuoco voices Pool Monster Diedrich Bader voices Batman