The 'Creepy Hooded Guy' or 'An Intruder' meme originates from 'The Mandela Catalogue,' a popular analog horror web series created by Alex Kister. The character, known as the Intruder or 6, appears as a high-contrast, distorted figure hidden within a dark hoodie. While originally designed to evoke psychological horror and the 'uncanny valley' effect, the image became a viral sensation on platforms like TikTok and Twitter. It is frequently paired with captions about unwanted house guests, existential dread, or the '3 AM' trope. Its effectiveness lies in the primal fear of a silent observer lurking in the shadows, making it a staple for both genuine horror fans and ironic internet humorists.