Because you like Woo-jin Lee in Oldboy
A born psychopath, don't expect Michael Myers to understand the difference between right and wrong. See them in Halloween.
A crabby troll, Karkat Vantas is perpetually angry about his lot in life. See them in Homestuck.
Arwen has to choose between a life of loneliness or love and inevitible death, both rather unfortunate options. See them in The Lord of the Rings.
A no-nonsense professor famous for her strictness, Minerva McGonagall only shows her warmer side to those closest to her. See them in Harry Potter Series.
GLaDOS will supply the food when you get together: a delicious cake. Of course, it could just be a trap so she can kill you. It’s hard to say. See them in Portal Series.
Insightful about everyone else's neuroses, Rose Lalonde is not as aware of her own. See them in Homestuck.
Greenpeace? No, this brave eco-terrorist is waging Greenwar. See them in Final Fantasy Series.
Everyone is just a chess piece, and Izaya Orihara is a master player. See them in Durarara!!.
Barbara Kean is loving, selfless, and caring. But, she's less stable than she'd like to admit. See them in Gotham.
This barber doesn't cut hair. Sweeney Todd sends his clients down a chute to be baked into his partner-in-crime's pies. See them in Sweeney Todd: The Demon Barber of Fleet Street.
After having his mind altered after a bad breakup, Joel Barish is not convinced that ignorance is bliss. See them in Eternal Sunshine of the Spotless Mind.