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.
Genres: Animation, Comedy, Family
Cast: Drake Bell, Jerry Lewis, Tabitha St. Germain, Logan McPherson, Jarrod Young, Brian Drummond, Andrew Francis, Britt Irvin
Status: Released
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