Originally Posted by xShainax
I like anime's with darkness. Like Supernatural the anime and black butler
Is Black Butlet dark? I watched maybe 10 episodes before deciding it wasn't my cup of tea, but I don't remember it being particularly dark...
Elfen Lied I would strongly caution against. It's quite graphic, and imo the anime isn't very good anyway...the manga is better, if you're interested in the serious I would check that out instead.
Some I can think of off the top of my head are Darker Than Black, Monster, Hell Girl, Another (also rather bloody), Paranoia Agent (quite good imo), Perfect Blue (a favourite, but a little mature), Red Garden (another favourite), Deadman Wonderland (also pretty bloody I think...I've only read the manga), and Bokurano.