When she hears that there is a monster in the lake named the Gobblewonker, she and Dipper want to find it and get the proof after hearing about a contest awarding money if they find proof of a mythical creature.Mabel wants to discover it so she can buy a giant hamster ball to roll around in.She is one of the two main protagonists of the series.to the small, sleepy town of Gravity Falls, Oregon to visit their great uncle, Grunkle Stan.They ditch Stan and go with Soos to find the monster.
When he carries out his promise, however, Gideon is enraged to the point of attempting to maim him, though Dipper is saved when Mabel intervenes, breaks up with Gideon herself and destroys Gideon's amulet.
The gnomes ask her to be their queen and try to kidnap her when she refuses.
Dipper aids in Mabel's escape and brings her back to the Mystery Shack on a golf cart.
When the opening ceremony turns sour and Wax Stan is found "decapitated" in the middle of the night, Mabel and Dipper search for the "murderer." Failing to do so, they attend Wax Stan's funeral, attended by the rest of the wax figures and Soos, only to realize the murderer wasn't a human at all.
They fight off all the murderous wax figures using decorative candles and other heat-producing objects.