Board Thread:General Wiki Discussion/@comment-5017423-20150829193834/@comment-2240864-20150830001552

Slenderman came from a SomethingAwful photoshop contest, and is a copyrighted character.

However, since the author has clearly taken no effort to enforce his copyrightsm it would be hard now for him or his options holders to do much about anyone who would infringe against it, as multiple people have been for years, and several for profit.