The urban internet legend is coming for us. We've seen the drawings and they're getting more and more sinister. He's coming. Slender man took over as the head Internet monster a few months ago and he's not showing signs of being topped. The Slender man is still at large and we think that Slender man costumes are some of the best, especially our Slender man Costumes. The Slender man Morphsuit in particular is a brilliantly easy costume, comfortable to wear and creepy as hell, perfect for Halloween, or just randomly creeping out people on a walk in the forest. See below for our whole range of Slender man Halloween costumes and click here to see all our Halloween costumes.