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Memory Erasing Gun

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S2e7 memory erasing gun in box

The memory erasing gun is a contraption used by the Blind Eye Society to make several residents of Gravity Falls, Oregon forget their supernatural encounters.


It was created by Old Man McGucket originally for the purpose of allowing him to forget certain memories, due to the guilt of helping Ford build the Universe portal. He eventually began using it so frequently he lost much of his memory, and eventually 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".

In "Society of the Blind Eye," it is used on Lazy Susan so she'd 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 on a rap song. Later, the society members tried to use it on Dipper and his friends when they were discovered, only to fail and get their own memories erased.

In "A Tale of Two Stans" it is revealed that Dipper has kept the gun and gave it to Ford so he can use it to erase the memories of the agency, so that they forget about Stan and the twins before they could discover the universe portal. Ford says "I dunno how you got one of these" which seems to imply that there is more than one. Ford presumably kept it so that he can keep his portal secret.

In "Weirdmageddon" it is used on Stan after he chose to sacrifice his memory for his brother by letting Bill into his mind, which destroyed Bill and finally ended Bill's reign over Gravity Falls.


  • Memories erased by the gun are stored in The Hall of the Forgotten.
  • Several members of the society use the gun on themselves, including Bud Gleeful and Blind Ivan.
  • List of people known to have had their memories erased:

Side effects

Use of the device has side effects after repetitive usage. 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, Old Man McGucket, used it on himself more than anyone else; he slowly went insane and lost all of his memory 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.

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Season One: Tourist Trapped | The Legend of the Gobblewonker | Headhunters | The Hand That Rocks the Mabel | The Inconveniencing | Dipper vs. Manliness | Double Dipper | Irrational Treasure | The Time Traveler's Pig | Fight Fighters | Little Dipper | Summerween | Boss Mabel | Bottomless Pit! | The Deep End | Carpet Diem | Boyz Crazy | Land Before Swine | Dreamscaperers | Gideon Rises
Season Two: Scary-oke | Into the Bunker | The Golf War | Sock Opera | Soos and the Real Girl | Little Gift Shop of Horrors | Society of the Blind Eye | Blendin's Game | The Love God | Northwest Mansion Mystery | Not What He Seems | A Tale of Two Stans | Dungeons, Dungeons, & More Dungeons | The Stanchurian Candidate | The Last Mabelcorn | Roadside Attraction | Dipper and Mabel vs. the Future | Weirdmageddon


Summerween | Weirdmageddon | Pioneer Day


The Mystery Shack | Tent of Telepathy | Underground laboratory | Gravity Falls, Oregon | Gravity Falls Forest | Northwest Manor | Lake Gravity Falls | Gravity Falls Pool | Gravity Falls Cemetery | Gravity Falls Junkyard | Gravity Falls Library | Gravity Falls Mall | Gravity Falls Maximum Security Prison | Gravity Falls Gossiper | Dusk 2 Dawn | Summerween Superstore | Scuttlebutt Island | Infinetentiary | Globnar Stadium | Hoo-Ha Owl's Pizzamatronic Jamboree | Mystery Mountain | Fearamid


Journal 1 | Journal 2 | Journal 3 | Smile Dip | Pitt Cola | Height Altering Crystals | Crystal Flashlight | Cloning Copy Machine | Cackling Skulls | Jack O' Melons | Soos' pick-up truck | Wax Stan | Stanmobile | Electron Carpet | Tape Measure Time Machine | Memory Erasing Gun | Mystic Amulet | Universe Portal | Grappling Hook | The Author's Laptop | Nathaniel Northwest's Statue | Laser Arm Cannon | Time Cuffs | Shacktron

Selected Songs

Made Me Realize | Disco Girl | Li'l Ol' Me | The Lamby Lamby Dance | Homework's Wack | Mabel's the Boss Now | Stan Wrong Song | Don't Start Un-Believing | Training Mix | Mabel Girl | Taking Over Midnight | We'll Meet Again

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