Zanthar, also known as The Being Whose Name Must Never Be Said, is an interdimensional criminal from an unknown dimension who appears during the events of Weirdmageddon.



Eons before the events of the series, Zanthar indulged in criminal activities before being called to join Bill Cipher, along with 8 Ball, Amorphous Shape, Hectorgon, Keyhole, Kryptos, Paci-Fire, Pyronica, Creature with 88 different faces, and Teeth.[3]

Season 2

In "Weirdmageddon Part 1," during the cold open, Bill introduces Zanthar with the rest of his friends to the residents of Gravity Falls. Afterwards, on Main Street, Zanthar and the other demons watch Bill turn Ford into a golden statue and taunt Dipper before burning the journals. Later in the episode, Zanthar is seen playing "Spin the Person" and enjoying the "V.I.P." party Bill is having at the Fearamid until Time Baby and the Time Police crash the party. To the beings' delight, Bill vaporizes Time Baby and his squadron. The party then continues as Zanthar and the other demons rejoice over Time Baby's presumed death.

In "Weirdmageddon 2: Escape From Reality," Zanthar and the rest of Bill's minions attempt to leave Gravity Falls and spread their chaos across the world, but are stopped by an invisible barrier. They are later subjected to Bill's rage over their inability to leave.

In "Weirdmageddon 3: Take Back The Falls", Zanthar participated in the fight against the Shacktron, during which it rammed the gigantic robot, only for the robot to toss it into the mountains, leaving behind only its party hat. It was sucked back into the Nightmare Realm along with its fellow comrades following Bill's defeat.


Xanthar appearance

Zanthar's body is shaped similar to a loaf of bread with four gorilla-like legs. It has dark grey-purple skin with some darker spots and no head. In its place is a light grey-purple patch with some dark grey-purple spots, resembling a loaf of sliced bread. It has small trees and patches of grass or moss growing out of its back, shoulders and other areas, and it wears a party hat.


Season 2


  • In concepts, Zanthar was going to look similar to an island, having things such as a castle and a river on it's back.[4] Its features are vaguely reminescent of the Island Head Beast, a gigantic, monstrous, disembodied head covered with trees.
  • Zanthar, along 8 Ball aren't seen after the Shacktron battle. Presumably, because Dipper sent him flying across the town.
    • Therefore, he's not seen during the scene, where the Henchmaniacs and the Nightmare Realm's monsters are sucked by the rift.
  • Zanthar, along 8 Ball, are the only Henchmaniacs, without an aura.
  • Zanthar is the largest of all of Bill's minions.
    • Despite this, Zanthar's size has changed considerably, during the entirety of Weirdmageddon: when he's presented, his size his larger than anybody else, but in many scenes later, his size is shrunk his about Pyronica and 8 Ball's size, possibly, this is because, he's very large to animate.


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  1. "Weirdmageddon 2: Escape From Reality." Jeff Rowe & Alex Hirsch (writers) & Matt Braly (director). Disney XD. November 26, 2015 No. 19, season 2.
  2. 2.0 2.1 2.2 "Weirdmageddon Part 1." Josh Weinstein, Alex Hirsch (writers) & Sunil Hall (director). Disney XD. October 26, 2015 No. 18, season 2.
  3. 3.0 3.1 Disney Insider (October 27, 2015). Exclusive: Gravity Falls Creator Alex Hirsch on Weirdmageddon, Part 1 (HTML). Archived from the original on November 12, 2015. Retrieved on October 27, 2015. “... Bill has spent eons amassing criminals and lunatics from different [italic added] dimensions...”
  4. Xanthar's concept art

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