Because you like The Master in Doctor Who

Ianto Jones' withdrawn nature conceals his emotional pain. See them in Torchwood.

Kilgrave is a domineering, abusive boyfriend. Then, add in the power of mind control. See them in Marvel Cinematic Universe.

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.

There's more to this sweet, caring landlady than meets the eye. See them in Sherlock.

There is never a dull moment with Jim Moriarty: expect booze and sing alongs in between all of the homicide. See them in Sherlock.

A formerly righteous wizard, Saruman has been corrupted by the forces of evil. See them in The Lord of the Rings.

Hoban Washburne shows you can be a hotshot space pilot *and* play with dinosaurs. See them in Firefly.

Leonardo is spiritual, and devoted to more than just pizza. See them in Teenage Mutant Ninja Turtles.

Working as a captain in the American Expeditionary Forces and a spy for British Intelligence, Steve Trevor wants to end World War I once and for all. See them in DC Extended Universe.

Greg Lestrade is gruff, loyal, and quietly competent. See them in Sherlock.

Manipulative, conniving, and ruthless, Mr. Gold is enigmatic no matter what world he's in. See them in Once Upon a Time.

James Gordon happens to be the one guy in Gotham City with proper morals who doesn't also run around in a cape. See them in DC Extended Universe.