To impress a beautiful girl, Harold Kelp, the grandson of professor Julius Kelp, who created a potion to transform his personality, gets his hands on his grandfather's secret elixir and unleashes his destructive alter ego, Jack.
Cast
Crew
Logan McPherson
Director, Editor
Paul Taylor
Director
Evan Spiliotopoulos
Screenplay
Angelo Libutti
Storyboard
Harvey Weinstein
Executive Producer
Paul Gertz
Executive Producer
Gregory R. Little
Executive Producer
Rick Mischel
Executive Producer
Eric Robinson
Executive Producer
Bob Weinstein
Executive Producer
George Paige
Producer
Barbara Zelinski
Producer
Mike Shields
Music
Bill Richmond
Characters
Jerry Lewis
Characters
Julius Kwan
Lead Animator
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