Because you like Doc Holliday in Tombstone

Peter Pevensie shows as much courage as a child king as he did under The Blitz of London. See them in The Chronicles of Narnia.

Mr. Blonde is the undisputed leader of his pack of suited-up outlaws, with a stoic and serious demeanor, and a penchant for bloodshed. See them in Reservoir Dogs.

Vincent Vega likes a good steak, a cheap milkshake, and killing a target without anything going wrong. See them in Pulp Fiction.

Loyal to his family and associates and distrustful of anyone else, Tony Soprano is a good guy to have on your side. See them in The Sopranos.

This android may not have emotions, but Lt. Commander Data's curiosity about humanity is endless. See them in Star Trek: The Next Generation.

Foggy Nelson is a principled small-time lawyer fighting for fellow little guys. See them in Marvel Cinematic Universe.

Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.

This power-hungry Time Lord calls himself the "master of all." Bonus: he has 13 lives. See them in Doctor Who.

The only constant in Night Vale is Cecil's hypnotic voice. See them in Welcome to Night Vale.

Christine Daae has been secretely taking lessons from a phantom musician. It sounded less creepy in her head. See them in The Phantom of the Opera.

A legendary warrior with a complicated relationship to the truth, Jaime Lannister is revered and reviled in equal measure See them in Game of Thrones.

Ava may just be the perfect woman. So long as she can pass a Turing test. See them in Ex Machina.