Douglas "Dougie" Powers, commonly known as Dr. Evil, is a fictional character portrayed by Mike Myers in the Austin Powers film series. He is the main antagonist and Austin Powers' nemesis (and secret twin brother). He is a parody of James Bond villains, primarily Ernst Stavro Blofeld. Dr. Evil routinely hatches schemes to terrorize and take over the world, and is usually accompanied by "Number Two", his second-in-command who fronts his evil corporation Virtucon Industries, his personal assistant Frau Farbissina, and his sidekick Mini-Me, a dwarf clone of himself.

American costume maker Phillip Morris had also created a long-running character named Dr. Evil in 1959. After an eight-year legal battle, New Line Cinema paid him a settlement in response to a trademark dispute.

In 1997, an unnamed Saturday Night Live writer claimed Dr. Evil was based on SNL creator Lorne Michaels, saying: "It's the lower lip, the eyebrows, the whole way he talks." Another unnamed former SNL actor cited Michaels' "obsessing about minutiae, the way he ends everything by bringing his pinkie up and chewing the fingernail". Myers' former SNL castmate Dana Carvey stated the character is based on a Michaels impersonation he created, including his pinkie mannerism.

Myers disagreed, insisting the character was based on Donald Pleasence's portrayal of Bond villain Ernst Stavro Blofeld in You Only Live Twice. He later stated, "The Dr. Evil voice is a little bit Lorne Michaels ... but there is a lot more Donald Pleasence in there than Lorne. Lorne has a pinky thing, but he doesn’t do it anymore."

In the first film, Austin Powers: International Man of Mystery, Dr. Evil is an internationally known criminal genius, cryogenically frozen in 1967 and reawakened in 1997. According to his own account, Dr. Evil's upbringing went as follows:

The details of my life are quite inconsequential ... My father was a relentlessly self-improving boulangerie owner from Belgium with low-grade narcolepsy and a penchant for buggery. My mother was a 15-year-old French prostitute named Chloé with webbed feet. My father would womanize; he would drink; he would make outrageous claims like he invented the question mark. Sometimes, he would accuse chestnuts of being lazy, the sort of general malaise that only the genius possess and the insane lament.

In the second film, he went on the Jerry Springer show and declared that he was the "Princess of Canada".

In the third film, Goldmember, Nigel Powers reveals that Dr. Evil is in fact Austin Powers' twin brother, Douglas "Dougie" Powers. He explains that Douglas and Austin were separated as babies following a car explosion, and that he had thought that only Austin had survived. Following the explosion, Dougie was raised in Bruges, Belgium.