Because you like Buddy in Elf

Driven, resentful, and ruthless, Mello is an emotional powder keg. It's only a matter of time before he explodes. See them in Death Note.

With a unique ability to empathize with killers, Will Graham helps society but his sanity pays the price. See them in Hannibal.

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.

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

A rugged frontiersman and consummate survivor, Hugh Glass has a relationship with the natural world that is downright spiritual. See them in The Revenant.

England may cultivate the image of a well-bred gentleman, but he has both the temper and mouth of a seasoned sailor. See them in Axis Powers Hetalia.

Eren Jaeger will erase the Titans from this world until not a single one remains. See them in Attack on Titan.

Bo Dennis once dreamed of being prom queen, but then she found out that she's part of some ageless secret race that feeds on humans. See them in Lost Girl.

Fox Mulder is a devoted believer in aliens, monsters, and that the truth is out there. See them in The X-Files.

If there's power in being average, Mikado Ryugamine will find it and use it. See them in Durarara!!.

Raiden is an efficient soldier haunted by his repressed past. See them in Metal Gear Series.

With the loyalty and pluckiness of a puppy, Nana Komatsu is a hopeless romantic. See them in Nana.