The Gobblewonker is a legendary lake monster that is thought to live at the bottom of Lake Gravity Falls. In the episode "The Legend of the Gobblewonker," Dipper, Mabel and Soos embark on a mission to get proof of the legendary lake monster in order to win $500 for the monster photo contest.


After Grunkle Stan takes Dipper and Mabel to the lake for some "family bonding time," Old Man McGucket starts running around the pier, saying that he had seen the Gobblewonker. After Dipper, Mabel and Soos are chased by the monster into a cave, it is revealed that the Gobblewonker is actually a robot built by Old Man McGucket, who often creates extremely dangerous and destructive robots when he feels neglected or sad. However, the real lake monster is shown at the bottom of the lake at the end of the episode, and promptly swallows Dipper's last camera as the episode ends.

In "Headhunters," a part of the Gobblewonker robot can be seen as scrap metal behind Old Man McGucket in the Gravity Falls Junkyard.

During Dipper's "Voice Over" story in "Bottomless Pit!," he encounters Old Man McGucket in the junkyard and mentions the events of "The Legend of the Gobblewonker," where McGucket used the Gobblewonker robot to chase after him, Mabel and Soos.

In "Society of the Blind Eye," McGucket says in a memory (from "day 273" of his experiment) that he saw "something big" at the lake. It's highly likely that he saw the Gobblewonker and that experience inspired him to build a robotic replica years later.

In "Weirdmageddon 3: Take Back The Falls," pieces of the Gobblewonker robot (mostly the head and neck) are incorporated into the Shacktron.


The Gobblewonker was described by Old Man McGucket as having a long neck like a giraffe, and wrinkly skin like Grunkle Stan. The real Gobblewonker, seen at the end of the episode, does have a long neck, but it has green, scaly skin. Its eyes are dark green and its lower jaw overlaps its upper jaw. It has two tusks along with other sharp teeth, and its head has two fish hooks stuck in it, one on its nostril, and one just above its eye. It has short legs with webbed feet and its tail has a fin like a fish. It has a long mane like a horse's that runs all the way down its back.


Season 1

Season 2



  • The Gobblewonker is based off the many legendary lake monsters often reported by eyewitnesses in several countries but never proven, such as the Loch Ness Monster and the Ogopogo.
  • The Gobblewonker is coal powered.
  • The name comes from the Alice in Wonderland Jabberwocky.


Click here to view this page's gallery.

Site navigation

Community content is available under CC-BY-SA unless otherwise noted.

Fandom may earn an affiliate commission on sales made from links on this page.

Stream the best stories.

Fandom may earn an affiliate commission on sales made from links on this page.

Get Disney+