Bubble was the secondary antagonist of Glitch Productions' indie animated series The Amazing Digital Circus, voiced by series creator Gooseworx. Like his owner/boss Caine, he is an artificial intelligence taking the form of a living bubble that seems both subservient and friendly to Caine, living inside his hat until called upon. He can be popped and returned into Caine's top hat. After Caine was accidentally thrown out into The Void by Kinger, Bubble was also deleted along with him. Unlike Caine, however, Bubble's intelligence was unable to survive this as they were reverted to a normal, inanimate bubble as Caine was left alone to self-reflect before his eventual return to The Grounds, leaving behind what remained of Bubble in the Void.