` ` Slenderman '' character allegedly encouraged 12-year - old girls to stab a classmate . Slenderman was born in 2009 in an online community for people who create fake supernatural images . In June 2009 , a Photoshop contest for images that appeared to be paranormal was launched in a forum on the website Something Awful . He 's featured in fan art , short stories , videos , and games on Facebook . Police : Girls claims the attack was done to impress the fictitious bogeyman .
` ` Slenderman '' character allegedly encouraged 12-year - old girls to stab a classmate . Slenderman was born in 2009 in an online community for people who create fake supernatural images . He 's featured in fan art , short stories , videos , and games on Facebook . Police : Girls claims the attack was done to impress the fictitious bogeyman .