Because you like Annie James in The Parent Trap

A vain and arrogant womanizer, Roy Mustang has hidden depths. See them in Fullmetal Alchemist.

Kyoya Ootori is possibly the only person who could reasonably go from VP of a school club to ruling the world. See them in Ouran High School Host Club.

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.

Castiel might be an immortal angel, but the human world is still more than a little confusing. See them in Supernatural.

Edward Elric has a quick mind along with a quick temper. See them in Fullmetal Alchemist.

Usually the life of the party, Laszlo is now seriously planning the vampiric takeover of the New World. Or at least Staten Island. See them in What We Do In The Shadows.

An underdog with nothing left to lose, Donnie Creed has everything to prove. See them in Creed.

Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.

A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.

Maka is determined to collect and purify 99 Kishin eggs– human souls that have been corrupted by evil– and one witch soul. See them in Soul Eater.

The quiet, intense Daryl Dixon lets his crossbow do the talking. See them in The Walking Dead.

It doesn't matter how noble or brave he is. Jon Snow is a bastard, and people don't let him forget it. See them in Game of Thrones.