Because you like M. Bison in Street Fighter

Dolores Umbridge keeps her villainy hidden (albeit poorly) behind a sheen of sugary pink politeness. See them in Harry Potter Series.

A devoted butler, Alfred Pennyworth is both a fiercely protective guardian and a lethal gunman. See them in Gotham.

A master manipulator, Frank Underwood has a tight grip on Washington DC. Plus who doesn't like having a leader who frequently tosses off Shakespearean asides? See them in House of Cards.

Optimus Prime is a shapeshifting sentient robot leading a team of robots to stop evil from taking over. See them in Transformers.

If there's power in being average, Mikado Ryugamine will find it and use it. See them in Durarara!!.

Father to a murdered son and husband to a murdered wife, Maximus Decimus Meridius will have his vengeance. See them in Gladiator.

Aldous Snow is a rock star who plays hard and parties harder. See them in Get Him to the Greek.

Khan Noonien Singh is super strong, super smart, and out for revenge. He always seems to be two steps ahead of his enemies. See them in Star Trek Into Darkness.

V is a violent anarchist with literally nothing left to lose. But, he might have a point. See them in V for Vendetta.

Ron Burgundy is a news anchor who signs off with "Stay classy, San Diego" or whatever his teleprompter says. Bonus: he plays the jazz flute. See them in Anchorman: The Legend of Ron Burgundy.

Oscar Jarjayes is a sword-swinging, fearless Commander of the Royal Guard who cross-dresses as a man. See them in Rose of Versailles.

Sideshow Bob is a bitter ex-performer who was forced to do inhumane stunts for slapstick comedy. Now he's exacting revenge on his former boss, a clown. See them in The Simpsons.