User blog comment:Goddess of Despair/Season 6 Battle 4 Voldemort vs Slender Man/@comment-181289-20130908011243

I believe Slender Man will win this in the end. There are a few reason for this but I'll start with one of the Slender Mans more defining traits. His stealth.

He can appear and disappear at will with no apparent effect or indication that he has, offering a level of stealth Voldemort does not have, even his apparition, which is noted in the books as making a "poping" noise. When used, this would give his position away. Then there the fact that Slender Man can make him self invisible or visible to who ever he wants, if he doesn't want to be seen, he won't be.

But there is another thing to consider when Discussing the Slender Man. While it's not really known what he is, it is clear he is not mortal. Which brings up the question, can Voldemort kill him or even injure him. While I don't know if Slender man can be injured, I really doubt that Voldemort has the capacity to actually kill him, what ever Slender Man is, I don't think Voldemort can kill him, while Voldemort can be killed. That alone gives Slender Man the edge.

Then there is the question can Slender Man's ability affect Voldemort. Namely his ability to screw with/ control the minds of his targets. While Voldemort is trained to resist this, I highly doubt he's ever trained to fight off something like Slender Man. But for the sake of argument, let's say he can resist it, I doubt he can do it for long, and the Slender Man will relentlessly pursue him, wearing him down to the point he will eventually break.

In the end, while Slender Man isn't as fully understood as Voldemort, He is clearly something beyond Mortal, and I believe that Voldemort doesn't have a way to really fight him or even be able to actually hit him thanks to his "Slender Walking", where as Slender Man will slowly but surely break Voldemort down.