Night Archives on Instagram: "The Slender Man myth began in 2009 on the Something Awful forums, where users created eerie images of a tall, faceless figure lurking in the background of photos. The character quickly spread across the internet, becoming a staple of creepypasta horror stories, YouTube series, and fan art. Slender Man was said to stalk children, manipulate minds, and demand loyalty from followers. By 2014, two 12‑year‑old girls in Waukesha, Wisconsin — Anissa Weier and Morgan Geyser