Because you like Amy Pond in Doctor Who
Leonidas is not the kind of king who merely gives orders; rather, he's out on the battlefield fighting alongside his men. See them in 300.
Simon Belmont is a vampire hunter bravely carrying on the family business. See them in Castlevania.
Alison DiLaurentis believes you're always better off with a really good lie. See them in Pretty Little Liars.
Did he ever tell you the definition of insanity? Just wait, and this psychopath will do just that. See them in Far Cry 3.
George Costanza is short, stocky, bald, neurotic, and the self-proclaimed "king of the idiots." See them in Seinfeld.
Brian Griffin is the most scholarly member of the family—when he's not drunk on martinis. See them in Family Guy.
Mikasa Ackerman is a near-perfect soldier who won't break her stone-faced expression whether she's killing foes or protecting loved ones. See them in Attack on Titan.
Chuck Bass is notorious for his flamboyant sense of style and love of partying. See them in Gossip Girl.
There are men who embrace destiny and do not show their fear. These are the ones that change the world forever. See them in Dragon Age Series.
For Celty Sturluson, it's rather upsetting to be the only headless girl in a city filled with full-bodied humans. See them in Durarara!!.
Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.