A nervous, kind-hearted jester who is the newest human trapped in the Digital Circus. She desperately searches for a way to escape while trying to keep her sanity.

The powerful AI ringmaster. He creates bizarre adventures for everyone, believing he is helping, even though his actions often make life more stressful.

Caine's floating assistant. Bubble is cheerful, goofy, and loyal, often following Caine wherever he goes.

The Sun appears as a yellow cartoonish sun, with round orange eyes (featuring four eyelashes on each side), a mouth in the shape of a large smile, and an orange corona. She seems to have violent and anger-driven tendencies, as she threatened to kill Caine for not giving her any voice lines in the series while Moon gets two. Once Caine considered giving Sun more lines, she immediately calmed down. This could suggest she has a rather vain or narcissistic side to her, given the fact she was angry about not having any lines, even though Moon is only given two. However, her tone of voice suggests she is rather hyper and joyful, as she sounds happy and carefree, though it's more likely she is just perpetually manic. This could describe her personality traits as happy, manic, carefree, somewhat violent, needy, and short-tempered who has mood-swings and desires attention. Her jealousy towards Moon suggests she may not like her very much.

The Moon has a simple design which appears to be a baby blue waning crescent moon with slanted eyes and a mouth. Her eyes and mouth have a thick dark blue outline as well. She is often seen smiling gently. Not much is known about the Moon's personality. However, she openly expresses her love to Caine due to him making her laugh. Due to the feelings not being mutual, Caine labels her as "frisky". However, in Episode 9, she comforts Caine. Caine reveals that he never programmed her to have feelings for him, which shows how she truly does love him and the others.

Ragatha is an average-height ragdoll looking humanoid character whose appearance is notably identical to that of a Raggedy Ann doll, composed of actual rags, cotton and buttons. This is further bolstered by the texture of her. She has messy, thick, yarn-like candy-red hair, with each individual strand varying in length but reaching roughly her shoulders. Four pieces of yarn extend right above her eyes, meant to represent her bangs. Her overall hair seems to be fashioned in a specific manner, appearing to vaguely resemble the 1940s pin-curl haircut, or more specifically, the Shirley Temple haircut. Ragatha has an oval-shaped head, with a thin neck. She also features mismatched eyes; her right eye is a large, dark cornflower-blue button sewn onto her face through its four eyelets by a dark gray string, forming an X, while her opposite eye is oval-shaped with a plain jet-black pupil and purple eyelids, and three visible eyelashes sticking out of the side. Additionally, she has a flat red triangular nose, a red mouth and lips, mitten-like hands, and a pair of stumps for feet.

A sarcastic purple rabbit with yellow teeth and yellow eyes and square black pupils and wears pink overalls and yellow gloves, who enjoys pranking and teasing the others. He often acts selfish, but occasionally hints at a softer side.

A mix-and-match toy made of mismatched body parts. They are blunt, grumpy, and often frustrated with the circus.

A ribbon-like character who wears comedy and tragedy masks. Her emotions change depending on which mask she has.

Along with his wife Queenie, Kinger became one of the first to enter the circus as digital copies of people created via a brain scanner in the Headset. His human counterpart in the real world, Grant Best, was a former worker at C&A and the co-creator of Caine, the other creator being his co-worker Scratch. Kinger is an alder wood king chess piece. He has cartoonish white-gloved hands detached from his body and two large asymmetrical eyes with blue irises. Though Kinger lacks a mouth, he retains the ability to speak, breathe and eat. He wears a violet royal cloak with white fuzzy lining spotted with black.