bill_cipher

The main antagonist of Gravity Falls. A triangle-shaped demon who causes destruction and madness for fun. Manipulative and tricky, with a very black sense of humor and a fondness for making deceptively appealing deals.

One-eyed with a long, black pupil. Wears a top hat and sometimes carries a cane. In personifications, he usually becomes a blonde haired man with either a yellow suit or a waistcoat, and often missing an eye. Wears a bowtie regardless of form.

Major Spoiler