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The Henchmaniacs are a group of interdimensional demon criminals who reside in the Nightmare Realm. They all serve under Bill Cipher, a fellow demon who brought them together and helped release them onto Earth. The demons serve as antagonists during the Gravity Falls finale event "Weirdmageddon".


The demons all indulged in various criminal activities across their respective dimensions before they eventually came to reside in a crawl space known as the Nightmare Realm. When a demon named Bill Cipher came into the dimension, they were all united under him and after Bill took it over, with Bill promising them that he would use the realm's connection to the Mindscape to enable them access to Earth.


8 Ball appearance
A green lanky demon covered in shackles with magic 8-balls for eyes. It along with Teeth attempted to eat Dipper, but failed to do so. It was partially petrified by an Eye-Bat while fighting Shacktron.

S2e18 Hectorgon and Amorphous Shape
A demon composed of many colorful squares. It was the only demon that did not participate in the fight against Shacktron.

S2e18 Hectorgon and Amorphous Shape
A red hexagon-shaped demon with a tie, hat, mouth and mustache.

Keyhole appearance
A diminutive turquoise demon with a large forehead containing a keyhole-shaped hole.

Kryptos appearance
A square-shaped demon with one eye similar to Bill.

Pyronica appearance
A feminine humanoid demon surrounded in pink flames.

Pacifier appearance
A dark grey infant-like demon with two large horns, a cross marking and a pacifier on its stomach, which conceals a second face.

Teeth appearance
A demon that is a set of teeth with stout arms and legs. It along with 8-Ball attempted to eat Dipper but failed.

Xanthar appearance
Also known as The Being Whose Name Must Never Be Said, it is a large, faceless behemoth.

Role in the series

The demon's make their first appearance as silhouettes seen in the episode "The Last Mabelcorn" when Bill is communicating with them through the Dreamscape. Near the end of "Dipper and Mabel vs. the Future" Bill (in Blendin's body) tricks Mabel into giving him the rift which he he then immediately smashed, creating an opening into Bill's world.

In "Weirdmageddon, Part 1", Bill finally brings the demons to Gravity Falls, Oregon and they prepare to cause havoc. When Ford Pines attempts to shoot Bill back into the rift with his quantum destabilizer, he misses and is captured by Bill who turns him into a golden statue as the demons watch. Avenging Ford, Dipper Pines confronts Bill but is overpowered by him. Bill then tells 8 Ball and Teeth that they can eat Dipper for a snack. However, Dipper is able to get away. Bill then converts a car into a sleek ride for himself and his friends to the Fearamid. Later in the episode, the demons party at Bill's Fearamid using the townsfolk as entertainment, and witness Bill vaporize Time Baby and the Time Police after the group arrives trying to arrest the demons.

In "Weirdmageddon 2: Escape From Reality," Bill's friends attempt to leave Gravity Falls to spread their chaos across the world, only to collide with an invisible barrier. Bill decides to inquire Ford how to get out, since he is the only one who knows how.

In "Weirdmageddon 3: Take Back The Falls," the rebel group from the Mystery Shack encroach upon the Fearamid using the Mystery Shack-converted Shacktron. Bill sends his henchmaniacs to fight off the mech, growing to colossal size as they do. Eventually, the Shacktron defeats all the demons and allows the rebels to enter the Fearamid. However, after Bill destroys the Shacktron, the demons corner the remaining rebels. Following Bill's defeat, the demons are sucked back into the nightmare realm.


  • In the altered opening sequence for "Weirdmagedden", the demons take the place of the series' main characters seen in the opening.
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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


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Gravity Falls Title Theme | 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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