Because you like Kesuke Miyagi in The Karate Kid
Nicholas Angel is super-dedicated to his job as a police officer. Maybe a little too dedicated. See them in Hot Fuzz.
Rupert Giles is a librarian on the outside, fearless evil-fighter on the inside. See them in Buffy the Vampire Slayer.
James Wilson is a compassionate doctor who willingly plays the sidekick. See them in House M.D..
Patrick Verona is a bad boy who's after a tough girl. See them in 10 Things I Hate About You.
It's a mad, mad world, but Alice has a surprisingly level head as goes her own way down the rabbit hole. See them in Alice in Wonderland.
Success for Eggsy Unwin means joining Kingsman, and failure could mean death. See them in Kingsman: The Secret Service.
People make more sense to the hyper-logical Temperance Brennan after they're dead. See them in Bones.
The incomplete experiment of an inventor, Edward Scissorhands was left with blades instead of hands and an unpolished understanding of the world. See them in Edward Scissorhands.
Jughead Jones loves burgers, his friends, and philosophizing with his unique brand of wisdom. See them in Archie Comics.
A powerful priestess, Melisandre is shrouded in mystery and lots of red. See them in Game of Thrones.
Bodhi Rook is a defected pilot for the Galactic Empire dead set on destroying the Death Star. See them in Rogue One.