User blog comment:Goddess of Despair/Season 6 Battle 4 Voldemort vs Slender Man/@comment-181289-20130908011243/@comment-4484220-20130908020300

The first thing wrong with your vote is that you say Voldemort's apparation (not apparition, silly) will make a loud crack. This is the case with most wizards, but exceptionally powerful ones like Dumbledore and Voldemort have been capable of silently apparating. It should also be noted that there are various enchantments people in the Harry Potter universe put on themselves to make themselves invisible. Most wizards can't make themselves completely invisible but rather blend in, but remember that a powerful wizard such as Dumbledore was able to render himself completely invisible without a cloak while watching Harry look into the mirror of Erised. It is only safe to assume that Voldemort could do this too based on the fact that he's evenly matched with Dumbledore in magical power, and is even at one point regarded by Dumbledore as being more well-versed in magic than the Hogwarts headmaster himself. Voldemort has just as much stealth capability as Slenderman.

As for your argument that Voldemort probably couldn't even harm Slenderman, there are various levels of immortality. Elves of middle-earth are regarded as immortal... Unless you kill them. They may live for thousands of years if they are not harmed, but they are just as susceptible to being wounded and killed as mortal men. Is there any information we're given about Slenderman's immortality beyond the fact that he's lived for two thousand years? If so, then I might reconsider. But if not, then your assumption that Voldemort won't be able to harm Slenderman is pure speculation. You also appear to be forgetting that Voldemort spends a majority of the series being immortal himself. Even in immortality, when Voldemort's killing curse rebounded on him the first time he tried to kill Harry, it reduced him to an incredibly weak state. Even supposing there is something supernatural about Slenderman's durability, it's quite a bold assumption to say that the killing curse won't greatly weaken him.