Amorphous Shape

 is a demon and an interdimensional criminal, from the Nightmare Realm that appears during the events of Weirdmageddon.

Background
Eons before the events of the series Amorphous Shape indulged in criminal activities before being called together by Bill Cipher, along with 8 Ball, Hectorgon, Kryptos, Teeth, Pacifier, Pyronica, and Xanthar.

Season 2
In "Weirdmageddon Part 1," during the cold open, Bill introduces Amorphous Shape along with the rest of his demon friends to the residents of Gravity Falls. Afterwards, Amorphous Shape and the other demons watch Bill turn Ford into a golden statue and taunt Dipper before burning of the journals. Later in the episode, Amorphous Shape is seen playing "Spin the Person" and enjoying the "V.I.P." party Bill is having at the Fearamid until Blendin brings Time Baby and the Time Police to crash the party, but to the demons' delight Bill vaporizes Time Baby and his squadron easily. The party then continues as Amorphous Shape and the other demons rejoice over Time Baby's presumed death.

In "Weirdmageddon 2: Escape From Reality," Amorphous Shape and the rest of Bill's minions attempt to leave Gravity Falls and spread their chaos worldwide, but are stopped by an invisible barrier around the town.

Appearance
Amorphous Shape resembles an unfolded Rubik's Cube, composed of many colorful contorted squares, several of which have eyes on them. Amorphous Shape has a small white aura. Amorphous Shape also has two long tail like protrusions, both of which hang off of the two purple colored squares on its body. The protrusions are dark purple with a larger blue tuft at the end of them.

Trivia

 * In concept, Amorphous Shape was supposed to have the colors of a Rubik's Cube. Additionally, a mouth was planned to be on Amorphous Shape's lower half.
 * It holds items by having them hover right next to it.

Amorphous Shape