On screen
Cast
16 credited performers
Nathan Lane
Spot Helperman / Scott Leadready II (voice)
Cree Summer
Character not listed
David Ogden Stiers
Mr. Jolly (voice)
Debra Jo Rupp
Mrs. Mary Lou Helperman
Jerry Stiller
Pretty Boy (voice)
Kevin Schon
Character not listed
Rob Paulsen
Character not listed
Shaun Fleming
Leonard Helperman (voice)
Wallace Shawn
Principal Strickler (voice)
Mae Whitman
Girl #1, Girl #2, Girl #3 (voice)
Bernadette Peters
Character not listed
Patrick Warburton
Character not listed
John Mahoney
Character not listed
Tress MacNeille
Character not listed
Don Lake
Character not listed
Ray Wise
Character not listed