Night Lords
Ok, the night lords space marine legion. Started out as those weird, goth kids that nobody liked. Their Primarch name was Konrad, (but he he wanted to be a serial killer. So he called himself Night Haunter.) for Christ's sake, and they liked to pretend to be batman all the time, so nobody listened to them. Then the Horus Heresy happened and they were all happy 'cause they could be as weird as they wanted, and would be able to pretend to be batman ALL THE TIME. And that's why Night Lords are lame.
They also have an unhealthy addiction to flying, lightning and being giant emo fags. Known to try to be some badass terrorist shit by scaring the hell out of civillians. They are also known for being giant fucking nutheads who are stupidly insane.
Fuck that shit. These guys are so screwed up that they decide they liked defiling and raping dead bodies (just like that Jack the Ripper crap.)