star_border 4.8
Animation • Comedy • Family
1 hour and 12 minutes
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.
More informationexpand_more
Show crew
keyboard_double_arrow_down
Cast
Show more expand_more
keyboard_double_arrow_down