Bill Cipher

The dream demon is a creature that can be released into a person's mind.

History
The dream demon and the Eye of Providence it is based on is appears frequently in Gravity Falls.

A picture of the dream demon shows briefly at the end of the opening theme.

In "Dreamscaperers", Mabel and Soos witness Gideon summoning it in the forest. Later, Lil' Gideon releases it into Stan's mind where Dipper, Mabel, and Soos must chase it down.

Appearance
It is a triangle with a pyramid design, with an eye in the middle. In the theme song it has a hat on, a bow tie, and stick arms and legs, but lacks them in its most cameos.

Sightings
The following are sightings of the dream demon and the Eye of Providence:

Trivia

 * He is based off of the Eye of Providence, which is most commonly seen on the back of an US$1 bill.
 * A symbol on the rug of the Mystery Shack known as the "Eye of Providence" resembles the dream demon.