Worthington Dubois is a character invented by Phineas and Ferb for their film in the episode "Tri-State Treasure: Boot of Secrets"; he was Buford and Baljeet in disguise.
It has been said by Lawrence that he was his antique nemesis, it is unknown whether this happened inside the movie or not, so it is unknown if Worthington exists.
Dubois has the appearance of a man in his 30s: he has brown hair and beard with green eyes, and he wears a white shirt with a red tie, beige pants, jacket and hat and black shoes.
When the movie was over and Phineas and Ferb were getting ready to receive their award, he walked to the stage and Phineas and Ferb said that they had to give him thanks for being the actor to give life to their villains.
So far, It's unknown if he actually does exist.
- "Tri-State Treasure: Boot of Secrets" (First appearance)