Gravity Falls Wiki
Gravity Falls Wiki

The Memory Gun[1] is a contraption used by the Blind Eye Society to make residents of Gravity Falls, Oregon forget their supernatural encounters.

S2e7 Mabel setting dial

Mabel setting the dial to erase memories of her failed romances.


The memory erasing gun was created by Fiddleford McGucket, originally intended for the purpose of allowing him to forget certain memories, due to the guilt of helping Ford Pines build the Universe portal. He eventually began using it so frequently he lost much of his memory, and ultimately became senile. The members of the Blind Eye Society decided to use the device in order to help the citizens of Gravity Falls forget "all the things that go bump in the night."

By the summer of 2012, the gun was still being used by the Blind Eye Society. In "Society of the Blind Eye," it is used on Lazy Susan so she would forget about seeing the gnomes. When Mabel got her hands on it, she wanted to use it to forget about her past relationships, but ultimately decided not to along with Wendy, who was tempted to erase her memory of an annoying rap song. Later, the society members try to use it on Dipper and his friends when they were discovered, only to fail and get their own memories erased instead. After recovering McGucket's memory, Dipper takes the gun with him on their drive back to home.

In "A Tale of Two Stans," after the government agents hear the Pines Family and Soos in the portal room. Dipper takes the gun out of his backpack and gives it to Ford so he can use it to erase the memories of the government agents so that they forget about Stan and the twins before they could discover the universe portal, which he accomplishes by converting the beam into a sound frequency and broadcasting it around the Mystery Shack. When he sees the device, Ford says "I don't know how you got a hold of one of these," which seems to imply that there are more similar devices, and that he had encountered them before.

S2e15 memory gun rest

The Memory gun resting in Ford's Private Study.

In "The Last Mabelcorn," the gun is kept in Ford's hidden office. After Dipper discovered fragments of Ford's memories of Bill Cipher, he attempted to use the gun in a frantic attempt to eliminate Bill from Ford's mind, but it is revealed that Ford is immune to the gun's effects due to a metal plate in his head, so the ray bounces off his forehead and destroys Project Mentem.

S2e20 owl clock 3

The Memory gun destroying Stan's mind.

In "Weirdmageddon 3: Take Back The Falls," the gun was used by Ford to erase Bill when he was tricked into entering Stan's mind. Afterwards, it was stepped on and destroyed by Mabel during the twins' birthday party so that she would never forget Gravity Falls and her friends.


  • According to Gravity Falls: Journal 3, the memory gun blasts a wave of radiation strong enough to disassemble the neurological pathways containing memory.
  • Memories erased by the gun are stored in The Hall of the Forgotten, and the memories are stored in the form of videos.
  • Several members of the society use the gun on themselves, including Bud Gleeful and Blind Ivan.[2]
  • If it was used on Ford, the metal plate in his head would stop any effects of it.
  • As seen in "Society of the Blind Eye" and "Weirdmageddon 3: Take Back The Falls," it is possible to reverse the effects by presenting the forgotten memories, gradually allowing the person to retrieve the piece of memory that was erased.

Side effects[]

Repeated use of the device results in drastic side effects. The severity of the effects increases with the amount of use, ranging from minor brain damage to total memory loss and eventual insanity. The device's inventor, Fiddleford "Old Man" McGucket, used it on himself more than anyone else; he slowly went insane, lost all of his memory, and was changed into his current appearance before 1982 as a result. McGucket also became immune to any further memory wipes, as seen when Blind Ivan attempted to use it on McGucket. Since the gun is known for affecting people's minds when used very often, the fact that many society members use it on themselves may be the reason behind some of their eccentricities, like the man who married a woodpecker.

Known Users[]


Season 2


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  1. Gravity Falls: Journal 3 by Disney Book Group. July 26, 2016. Published by Disney Press. Page(s) Memory Gun. ISBN: 978-1484746691.
  2. "Society of the Blind Eye." Matt Chapman, Alex Hirsch (writers) & Sunil Hall (director). Gravity Falls. Disney XD. October 27, 2014. No. 7, season 2.

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Future technology Camouflage suit | Laser arm cannons | Time tape
Groups and organizations BABBA | Blind Eye Society | Gravity Falls Police Department | Love Patrol Alpha | Scarves Indoors | Time Anomaly Removal Crew | Time Paradox Avoidance Enforcement Squadron | Robbie V. and the Tombstones | The Royal Order of the Holy Mackerel | Winninghouse Coupon Savers | Wood Grain on Everything
Mystery Shack Dipper's hat | Dodo | Free sample potion | Mabel's grappling hook | Mystery Shack deed | Mystery Shack items | Smoke bomb | Stan Bucks | Vending machine | Wax Stan
Miscellaneous Blendin's letter | Explosion muffin | Granny Sweetkin's Yarnball | Huggy Wuvvy Tummy Bundle | Human-sized hamster balls | Jack-o'-melons | Mabel's sweaters | May May and the Hogg A.M. | Memory tube | Owl Trowel | Dipper's Swiss Army knife