Gompers

Gompers the Goat is a goat who lives in the Gravity Falls Forest right next to the Mystery Shack. The goat usually finds his way inside the Mystery Shack, and at one point, ate all of the household's tin cans.

History
Gompers first appears in "Tourist Trapped", standing on Dipper Pines's bed and nibbling on Mabel Pines's sweater. Gompers later nibbles on the pages of book 3 at the forest. At the end of the episode, the goat picks up a trapped gnome in it's mouth and runs off with it. The goat appears next in "Headhunters", appearing a couple of times outside the Mystery Shack during the time of the murder of a wax sculpture of Grunkle Stan.

Gompers is seen at the top of the Mystery Shack in "The Inconveniencing" and watches a wedding ceremony during Pioneer Day in "Irrational Treasure".