xkcdHatGuy, most famously known as 'Black Hat' from Randall Munroe’s webcomic xkcd, is a stick figure character defined by his signature black hat and chaotic, often sociopathic, behavior. Since his first appearance, he has become a symbol for high-level trolling, elaborate pranks, and pedantic observations that push social boundaries. Unlike other characters in the comic, Black Hat is rarely the victim and usually the instigator of complex schemes involving technology, math, or social engineering. In meme culture, the template is frequently used to represent someone who is 'chaotic evil' or to deliver witty, often dark, commentary on internet culture and science.