Because you like Peter Venkman in Ghostbusters
An aristocrat-turned-tomb-raider, Lara Croft does her best thinking while plunging off cliffs. See them in Lara Croft: Tomb Raider.
With her consciousness so easily shifted between bodies, Motoko Kusanagi is left unsure of who or what she really is. See them in Ghost in the Shell.
Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.
Don't let Princess Peach's sweet, gentle nature fool you. Princess Peach can put up a good fight. See them in Super Mario Bros..
Seth is short-tempered, crude, and terrible at school, but hopefully there's nothing an epic party can't fix. See them in Superbad.
The vampire that killed Zero Kiryu's family also infected him, and he starts to crave blood, much to his horror. See them in Vampire Knight.
With most of the people that Sango loved now gone, the only thing she wants is to kill the demon who destroyed her village. See them in Inuyasha.
Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.
Adults call him troubled and kids call him crazy, but Donnie Darko is too busy following the instructions of a giant bunny rabbit to care. See them in Donnie Darko.
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.
Free-spirited Annie Hall goes through life saying "La-di-da, la-di-da, la la." See them in Annie Hall.