Because you like James Wilson in House M.D.

Self-described as half-Slytherin, half-Ravenclaw, Molly Davidson has a big, demanding personality that doesn’t always leave space for other people’s emotions. See them in Booksmart.

Extremely violent and loyal, Sandor Clegane is called the Hound for a reason. See them in Game of Thrones.

A bloodsucker, Carlisle Cullen is actually more likely to give you a blood infusion. See them in Twilight.

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

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

Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.

Irene Adler has to use both her brains and her body to survive. Luckily, she's usually the most brilliant person in the room. See them in Sherlock.

Harrison Wells is a brilliant scientist full of secrets. See them in DC Extended Universe.

How lucky are we that Arthur Curry, the King of Atlantis, hasn't taken over the surface world? Very! See them in DC Extended Universe.

Rose Tyler may have not done too well in school, but she's certainly holding her own in space. See them in Doctor Who.