First things first, let's try not to get too stereotypical or judgemental; someone will end up getting hurt.
Anyway, yes, I see some of these "emo" characters around Bonfire and Ficho, and probably other places too. As long as they don't annoy me, anyone else or break any rules, I've got nothing against them. I was once in an "emo" stage of my life a good few years ago now, and I don't mind these people or characters at all. Maybe that's due to some form of kinship I feel with them....idk
Chances are, I think, that the person behind the character is young, going through a stage that I once did, and probably some other people of the community did too. They're just expressing themselves.
Or another eventuality is they make a depressed character with a tragic life story to attract some attention.
Or maybe that's just the way their character developed.
Either way, I don't mind. I'm more than content putting up with them.