Judge Doom (performed by Christopher Lloyd) is the main antagonist of Jaden finds out Who Framed Roger Rabbit? He is the one who framed Roger Rabbit, and is the boss to the Toon Patrol. He killed Marvin Acme and R.K. Maroon so that he could get ToonTown and "dip" it and build a freeway. It's also revealed that he is a Toon that killed Eddie Valiant's brother. His demise was when he got "dipped" himself by his own chemical. Jaden absolutely hates him for trying to destroy ToonTown and therefore destroying laughter for children.
- Judge Doom will become Jeffrey's enemy in Jeffrey & Friends find out Who Framed Roger Rabbit?.
- Judge Doom will become Bugs and Daffy's enemy in Bugs and Daffy's Adventures of Who Framed Roger Rabbit?.
- Judge Doom will be become Aaron's enemy in Aaron Discovers Who Framed Roger Rabbit?.
- Judge Doom will become Arik's enemy in Aaron and Arik Discover Who Framed Roger Rabbit. At the end of the adventure, in the epilogue, Judge Doom will be revived by Kurata, but transformed into a plant, becoming Audrey II.