"We keep pushing him down, but he keeps coming back up." -Carl
The Regurgitator is a villain that is set at high priority at the O.W.C.A. because he's supposedly more evil than Dr. Doofenshmirtz. After Agent P is assigned to him, Doofenshmirtz is sent a welcome basket from the Agency that comes with a letter telling about him being low priority, and so he goes to the Regurgitator's lair to try and restore himself to a higher priority again. The Regurgitator gives Doofenshmirtz a form to apply for an 3 year internship at his lair. Doofenshmirtz accepts, and starts working. Doofenshmirtz, however, begins having doubts when the Regurgitator says that he's not going to explain his plan to Perry before killing him. Feeling unappreciated, Doofenshmirtz and tells him about all the things he made for the Regurgitator, a pair of rocket boots to reach the files in his wall, and a self destruction system for the lair..... that's already counting down. It also turns out that Doofenshmirtz also built a release button inside Perry's cage. Perry presses it, and escapes. He flips the switch on the tube that Doofenshmirtz entered through, causing it to start sucking upwards, making the Regurgitator get sucked up it, and shot through the building into the sky. Perry puts on the rocket boots, grabs Doofenshmirtz and flies away. The Regurgitator then lands in The O.W.C.A.'s prison.