Gideon Gleeful

A deceptive child antagonist who steals the Mystery Shack using fake psychic powers and hidden cameras.

Gideon Gleeful is the central antagonist of the first season finale, "Gideon Rises," serving as the nemesis to Dipper and Mabel Pines. Voiced by Thurop Van Orman, Gideon seizes control of the Mystery Shack, forcing the Pines family into exile at Soos's grandmother's house. During a press conference, he announces plans to transform the property into "Gideonland," a personal theme park. Gideon built a false persona of psychic ability, spying on the town through cameras hidden in the pins he handed out.

Quick Facts

Affiliation: Gideonland (proposed theme park)
Voice actor: Thurop Van Orman

Lore & Background

Gideon's true nature is revealed through his possession of Journal 2, which he obtained from Dipper. The book details secrets learned by an unknown author about Gravity Falls, hinting that bringing all three journals together opens a "gateway to unimaginable power." Gideon incorrectly assumes only two journals exist and believes the final one is hidden on the Shack's property. His obsession with acquiring Journal 3 leads him to deploy Old Man McGucket's giant robot, known as the Gideon-Bot, to chase the Pines family off their town bus. When cornered at a cliff edge, he attempts to claim Mabel as his queen while planning to rule the town, only to be defeated by Dipper during a physical altercation inside the falling robot.

Reader's Guide

His strategy involves public deception, using media appearances to solidify his hold on Gravity Falls while secretly using technology to monitor his enemies. His downfall occurs when Stan reveals his fake psychic abilities to the public, resulting in Gideon's arrest for conspiracy and fraud. This event allows Stan to reclaim the Mystery Shack deed and secretly retrieve Journal 2, while Dipper and Mabel reveal they possess Journal 3.

Did You Know?

His "psychic abilities" were actually surveillance feeds from cameras hidden inside commemorative pins distributed to townsfolk.
Stan Pines discovered Gideon's deception because his hearing aid picked up the camera feedback.
Gideon believed there were only two journals, not realizing he had already stolen Journal 3 from Dipper.
The episode "Gideon Rises" was watched by 3.2 million viewers in its original American broadcast.