After numerous slender jokes online, and a makeshift slender costume this was put together as a joke. Don't expect anything too fancy, we were just having fun. Slendermen Plays Slender (Episode 2) - YouTube
There really isn't much you can do with this. Can't give Slender a voice because that's not slender. Can't really have him walking around on camera because it's meant to be a face cam (a joke because this is what everyone does) and there is only so much you could do in game. We do however, have another idea with this that is actually funny. It's a prank tied into it. Were going to have a friend of mine play the game, then while there playing it have slender apear behind them in real life, so when they turn around after they die, they'll see real slender.