Jack Rabble A.K.A Mr. Hyde is the hidden main antagonist of the 2013 Direct-To-Video Scooby-Doo movie, Scooby-Doo! Mask of The Blue Falcon. Jack Rabble is a robot builder who dressed like Mr. Hyde to steal convention money.
Role in the Film
According to Fred Jones, Jack Rabble used to build robots and enter them into duels on a show called Combat Bots. He was banned from the show forever after one of his robots destoryed the studio. He later dressed up like a comic villain named Mr. Hyde and built a evil robot dog and a swarp of evil bats so he could steal some money at a comic boo convention. However Scooby-Doo and the Mystery Inc. Teenagers were atteneding the convention and Scooby and his owner Shaggy Rogers dressed up like Dynomutt and the Blue Falcon and stopped him. Rabble was soon defeated, unmasked and taken to jail.