Because you like Jimmy McNulty in The Wire
If Lisbeth Salander can hurt a bastard who deserves it by digging up stuff about him, she feels good. See them in The Girl with the Dragon Tattoo.
It’s usually the good-looking, charismatic, play-by-their-own-rules types that get everyone into trouble, and Tyler Durden is Exhibit A. See them in Fight Club.
Egon Spengler prefers collecting spores, molds, and fungus to interacting with people. See them in Ghostbusters.
Tom Hansen is a full-fledged romantic impatiently waiting for his love story. See them in (500) Days of Summer.
Nick Miller might not have a bank account, but he defintely has a lot of love to give. See them in New Girl.
Driven by guilt and rage, Kratos is less a man and more an unstoppable avatar of anger and hate. See them in God of War.
Terry Jeffords (and his muscles) may look ferocious, but inside he's just a caring mama hen. See them in Brooklyn Nine-Nine.
Obi-Wan Kenobi is a sage Jedi who doesn't need to say much to teach you a galaxy's worth of wisdom. See them in Star Wars Series.
Sansa Stark is a fan of all things pretty. Unfortunately, her life is about to get extremely ugly. See them in Game of Thrones.
Krusty The Clown somehow makes life sillier and more somber at the same time. See them in The Simpsons.