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.

• DirectorLogan McPherson
• Release24 November 2008
• Genre
  Animation / Comedy
• Duration1h 12m
• Budget?
• Revenue?
• Rate
  

  4.842
  19 reviews
• Productions

  Kaleidoscope TWC, Rainmaker Entertainment, The Weinstein Company, Mainframe Entertainment