Because you like Daniel Desario in Freaks and Geeks

Orphan Bruce Wayne has a tortured soul, but he's trying his best to weed out corruption. See them in DC Extended Universe.

Hiccup Haddock III may be the only Viking nerd in recorded history. See them in How to Train Your Dragon.

How is angel Aziraphale supposed to stop the apocalypse when Hell's forces misplaced the Antichrist somewhere? See them in Good Omens: The Nice and Accurate Prophecies of Agnes Nutter, Witch.

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

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.

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.

It's easy for Brian O'Conner to fake his way into the world of extreme racing because he's been popping cars since his teenage years. See them in The Fast and the Furious.

A powerful dragon-hunting warrior, Dovahkiin is destined for great things. See them in The Elder Scrolls V: Skyrim.

A wildly brilliant detective, Sherlock Holmes can figure out everything except how to interact with other human beings. See them in Sherlock.

When push comes to shove, the usually overly cautious Luigi has the heart of a hero. See them in Super Mario Bros..

John Watson is haunted by his past (who isn't) but he's starting to branch out with some help from a world class detective. See them in Sherlock.