'Slender Man' keeps the dorky tie and tentacles, but never finds what was scary about the nearly decade-old creepypasta creation.
"I'm never going to let this happen again. I'll do whatever I have to do."
Slenderman is a fictional monster created by Eric Knudsen and developed by anonymous "creepypasta" authors.
Anissa Weier and Morgan Geyser, both charged with attempted first-degree homicide, are accused of stabbing a friend 19 times in May 2014.
Two 12-year-olds in Wisconsin allegedly tried to kill their friend to impress an imaginary monster.
The town of Waukesha, WI, where a Slender Man-spurred stabbing happened, is urging retailers to take the costume off the shelves