The roof once held a very large, working vacuum cleaner that towered on the top of the building. It was destroyed when Perry the Platypus turned it on, making it roll forward and suck up Phineas and Ferb's submarine with it. Its "evil jingle" is " Doofenshmirtz Abandoned Vacuum Cleaner Factory!" Strangely, the first floor is. Evil Jingle is a jingle heard the first time the Doofenshmirtz Evil Incorporated building. This is Doofenshmirtz's Theme Song for his home building. This appears in Busted. This makes refrences to Doof's "Evil Jingles" that are heard in the show. Chorus: Doofenshmirtz Evil Incorparated!.
The main purpose of the company is to assist Dr. Doofenshmirtz in his schemes to conquer the Tri-State Area. It is kind of shaped like Ferb's head, as Phineas commented to Ferb as they prepared to crash into it. (Phineas and Ferb The Movie: Across the 2nd Dimension). A typical day at Doofenshmirtz Evil Incorporated. Information relating to Doofenshmirtz Evil Incorporated. For additional non- business. According to his own life story he was a bratwurst salesman until he was ruined by the Hot dog industry; only then did he become an evil scientist. In Phineas and Ferb the Movie: Across the 2nd Dimension, a more intelligent and successful version of Dr. Doofenshmirtz (from an alternate reality) appears, with the regular Dr.