Emo Nightwing. He wears a black costume, has shaggy jet black hair, has a dark and edgy codename, and his parents were murdered in front of him. A lot of non-readers assume Nightwing is an angsty character because of those things.
Emo Nightwing fights crime while listening to Linkin Park and My Chemical Romance, avoids all social interaction because he's so upset all the time, and has constant internal monologues about how horrible and depressing his life and the world are. Worst of all, he's a Tumblr user