Dr. Heinz Doofenshmirtz (often called "
Doofenshmirtz", or occasionally "
Doof") is a fictional character and the main antagonist (of Agent P, aka
Perry the Platypus) from the animated television show
Phineas and Ferb. He was created by
Dan Povenmire and
Jeff "Swampy" Marsh, and is voiced by Povenmire. The character first appeared in the pilot episode of the series and appears in the majority of episodes. He is described as an incompetent and forgetful
evil scientist intent on conquering the "entire tri-state area" by creating obscure but nefarious inventions. Dr. Doofenshmirtz speaks with a caricature of a German accent and is from the fictional European country Drusselstein.