[HABIT]

Slenderman started out as a "make a scary creature" photo contest entry, then Marble Hornets took it and made something of it and Tribe Twelve came out originally as a shout out to Marble Hornets, but became its own series, and about a month or two after that, EverymanHYBRID started their Slendy series, I'm not sure when Alex, Chris, Jesse, and Greg came up with their series, but I'm guessing sometime after the three major series started up. Of course tons more series have spawned up on youtube but I'm not really sure I'll watch any others because they all have the same start formula. "Starts normal, or something strange happened right away, 'Oh no, it's gotta be Slenderman!' then shit gets stranger."