Caine

Caine is dressed as a ringleader, sporting a red tuxedo with a black collar and bowtie. He wears a white undershirt with two red buttons on it, alongside white gloves an black leggings. Lacking most human features, his head consists of a large jaw resembling a wind-up chattering teeth toy with pearly white teeth and red gums. His eyes, one with a green iris and the other with a blue one, float inside the jaw. Due to the cartoonish nature of the animation, his jaws are expressive, with the top row of teeth acting as eyebrows at times. Similarly to Bubble, he can form a tongue when needed. To cap it off, he wears a black top hat and tends to hold a baton depending on the situation.

Caine is depicted as an over-the-top, vivacious ringleader. However, there's an aloofness about him and a clear significant disconnection towards the traumatic events that the characters around him are experiencing.

Series creator, Gooseworx states that despite Caine's penchant for taking humans captive and tormenting them through hilariously deadly circus games and tricks, he isn't actually outright evil, just obliviously mischievous.

Caine is also shown to be secretive at times, often concealing or even lying about information related to his 'unfinished work'. So far, these ventures seem to be driven entirely by naive and misguided intentions.

Caine has heterochromia: Two different-colored eyes. One blue, and one green.

Even Caine gets weirded out by some of the stuff Bubble does. (Maybe also why he called Bubble a “Parasite”.)