Bigfoot, also known as Sasquatch, is a beast briefly shown in Gravity Falls' opening credits running and looking at the camera. It is an allusion to the famous film that allegedly contains footage of Bigfoot.
It appears in one frame in the theme song.
The creature has brown fur all over its body. The "Sascrotch" from "Tourist Trapped" and "Boss Mabel," has brown shaggy fur, its ear, hands, feet, and face are tan and it is wearing underwear. In the Gravity Falls season 2 poster there is a picture of a Bigfoot.
- In "Tourist Trapped" and "Boss Mabel," it is shown that Grunkle Stan has made a "Sascrotch" a parody of Sasquatch wearing underwear, as one of the many hoaxed exhibits in the Mystery Shack.