Lurk more. I'll give a small overview because there was fuckwin Vampire trilogy fanart in the thread.
Ecstasy a/k/a Darks came from summer of last year as a favorite from a "Deviant Art RAGE" thread. It's a 13 year old kid's portrait and description of himself, saying that he likes to litsten to Linkin Park, sharp objects, and staying up all night. It was initially a forced meme, like Tuffdawgs, and banned on sight by mods. Unlike Tuffdawgs, people actually liked it, so there was a whole load of fanart produced. Agony a/k/a Lights is an /a/ made counterpart for Darks. If I can recall, Darks became popular around the time that Giovanni/Giovannipunch became a meme.