The Gravity Falls Maximum Security Prison is the state penitentiary where Gideon Gleeful once resided as an inmate. It is also where he hosts his show Li'l Gideon's Big House! on Gravity Falls Public Access TV. It is where Gideon's men used to reside as well.
In "TV Shorts 1," the penitentiary is actually seen. It is also revealed to be the location of Gideon Gleeful's incarceration. Gideon hosts a TV show, "Li'l Gideon's Big House!" from here.
In "The Stanchurian Candidate," the prison is seen when Bud Gleeful communicates with Gideon during his mayoral campaign. The prison is also shown during the credits scene, where Gideon took down a poster to reveal a drawing of Bill in his wheel.
About ten prisoners, including Gideon and Ghost-Eyes, escaped during the events of Weirdmageddon and formed the Discount Auto Mart Warriors. Killbone and two other previously-seen inmates were not visible as part of the group, though Killbone appeared again after the events of Weirdmageddon.
There is also a guard named Daniel who Gideon bribes for issues of Preacher's Digest, a lunch lady named Phyllis who Gideon is attracted to, a Prison Counselor who criticizes Gideon, and the Prison Warden who most prisoners seem afraid of.
The following is the prison's schedule:
- 8:00 to 8:30 AM - Breakfast
- 9:00 to 11:30 AM - Rehabilitative Art Program
- 12:00 to 12:30 PM - Lunch
- 12:30 to 1:30 PM - "Free Play" in yard
- 2:00 to 5:30 PM - Rehabilitative License Plate Making
- 6:00 to 7:00 PM - Evening meal
- 7:00 to 9:00 PM - Free time
- 9:00 PM - Lights out
- 119. "Dreamscaperers" (pictured)
- 14. "TV Shorts 1"
- In one of the Creepy Letters from Lil' Gideon, Gideon mentions that they only play old reruns of Duck-tective on TV.
- In another, Gideon reveals that he is attracted to "Lunch Lady Phyllis."
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