Dr. Heinz Doofenshmirtz is the main villain from the Disney Channel animated series Phineas and Ferb; he is a mad scientist and head of Doofenshmirtz Evil Incorporated. He tends not to be evil in the traditional sense, but rather overly dramatic, eccentric and generally clueless. He constantly attempts to wreak havoc across "the entire Tri-State Area", but all of his plans tend to be thwarted by his nemesis, Perry the Platypus.
In the series' Christmas special, Phineas and Ferb Christmas Vacation!, he plots to ruin Christmas for the rest of Danville by convincing Santa Claus that everyone in the city is naughty, using his newest device, the Naughtyinator. However, the flaw in his plan is that, unlike most other villains, he doesn't hate Christmas and has no real reason to want to destroy it. He even confides to Perry that what he truly wants for Christmas is the ability to hate Christmas.