Greetings, mortals! I am Bill Cipher, a triangular inter-dimensional demon from the Nightmare Realm. I have been running amok in Gravity Falls, Oregon since being summoned by Stanford Pines over thirty years ago. I am also known for my mysterious demeanor and sadistic humor. My goal is to rule all of reality and existence. Remember! Reality is an illusion, the universe is a hologram, buy gold, BYE!