Doofenshmirtz Evil Incorporated, also known as Doofenshmirtz Evil Inc. or Doofenshmirtz Corporation, is a company owned by the evil scientist Dr. Heinz Doofenshmirtz. Most of the daily operations of the company are run by Doofenshmirtz himself. The main purpose of the company is to assist Dr. Doofenshmirtz in his schemes to conquer the Tri-State Area.
A typical day at Doofenshmirtz Evil Incorporated begins with Dr. Doofenshmirtz coming up with a plan to take over the Tri-State Area. He then builds an evil invention, also known as an "Inator". Perry the Platypus, Doofenshmirtz's nemesis, arrives to put a stop to the scheme. Doofenshmirtz captures Perry in a trap, and explains his evil plan. After Dr. Doofenshmirtz is finished explaining, Perry the Platypus escapes from the trap and defeats Doofenshmirtz. Job done, Perry the Platypus leaves Doofenshmirtz to shout "Curse you, Perry the Platypus!".