Eons before the events of the series Kryptos indulged in criminal activities before being called together by Bill Cipher, along with 8 Ball, Amorphous Shape, Hectorgon, Keyhole, Teeth, Paci-Fire, Pyronica, and Xanthar.
In Weirdmageddon Part 1," during the cold open, Bill introduces Kryptos with the rest of his friends to the residents of Gravity Falls. Afterwards, on Main Street, Kryptos and the others watch Bill turn Ford into a golden statue and taunt Dipper before burning the journals. Later in the episode, Kryptos 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 Kryptos and the other beings rejoice over Time Baby's presumed death.
In "Weirdmageddon 2: Escape From Reality," Kryptos and the rest of Bill's minions attempt to leave Gravity Falls to spread their chaos worldwide, only to be stopped by an invisible barrier around the town.
Kryptos' appearance is similar to Bill, as Kryptos is also a floating geometric shape with black limbs. like Bill, Kryptos is based on the symbol of a secret society, in this case, the masonic compass. It is a grey-navy colored rhombus. The top perimeter of its shape resembles a compass, with a functioning eye at the turning point, and the bottom perimeter resembles a square ruler. Additionally, Kryptos has a large wide mouth with buck teeth, wears black gloves, and has a small light blue aura.
- 218. "Weirdmageddon Part 1"
- 219. "Weirdmageddon 2: Escape From Reality" (no lines)
- 220. "Weirdmageddon 3: Take Back The Falls" (no lines)
- In concept, Kryptos was originally going to be named Andrew, be colored purple, and have a large purple aura.
- In the Bill Cipher AMA, Bill mentioned that he doesn't like Kryptos.
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