Amorphous Shape is a minor antagonist of the Disney XD series Gravity Falls. He is a demon and a inter-dimensional criminal from an unknown dimension and one of Bill Cipher's friends.
In "Weirdmageddon Part 1", On Main Street, Amorphous Shape and the other demons watch Bill taunt Dipper before burning the journals. Amorphous Shape is enjoying the "V.I.P." party until the Time Police invaded the Fearamid, but Bill vaporizes Time Baby and his squadron except Blendin. The party then continues as 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 across the world, but are stopped by an invisible barrier which makes Bill considers getting Ford 'out of retirement'.
In "Weirdmageddon 3: Take Back The Falls", It was sucked into the nightmare realm with it's comrades.
It's unknown what happened to Amorphous Shape along with the other Henchmaniacs afterwards.