Jax was a tall, anthropomorphic periwinkle[10] cartoon rabbit whose design elements evoked the look of rubberhose characters, despite having actual joints. They had long bunny ears on the top of their oval-shaped head, and their overall build was tall and slender, with a rather long neck. Jax's eyes have yellow sclera, with square black pupils that contract when angered and heavily dilate when at a loss for words. Jax's yellow teeth usually have a flat shape to them, but when their mouth is opened, their teeth appear sharp and jagged. Almost every time they are talking, their teeth stay closed while only their lips move. Jax had thin black eyebrows that appeared in the majority of scenes. Jax was a mischievous, occasionally flat-out bloodthirsty, laid-back, calm, sassy, impulsive, egotistical, arrogant, sarcastic, brazenly condescending individual who rarely shows any empathy or remorse for others. They appear indifferent to their imprisonment within the Digital Circus, which is an attitude that extends to their interactions with others. Their dismissal of serious matters is evident when, after asking a rhetorical question concerning Pomni's handling of their predicament and giving Ragatha a smug look, they reply to her ensuing query about why they're looking at her in such a manner with a dismissive: "I'm fine with doing whatever, as long as I get to see funny things happen to people."

Pomni is a short humanoid character with a large head, slim limbs, and white skin. Her face has a cartoon mime look, with small light red oval markings under and slightly behind her eyes that resemble blush, though how visible they are change depending on her expression. her mental health has ultimately improved and she has become kinder and compassionate. Her anxiety is now gone. Her friendship with Ragatha has grown stronger, along with the other circus members