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 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. Jax is fond of blood, combat, death, and chaos, as shown in "Candy Carrier Chaos!", before quickly being overjoyed upon realizing that the Fudge was coming to destroy the Candy Canyon Kingdom and its residents, an act they purposefully incited by leaving the entrance unlocked, which gave them zero benefit besides happiness. They show very little regard for the well-being of their fellow captives. Jax fears being vulnerable around others; despite briefly feeling sad, they refuse to attend Kaufmo's funeral. It is also worth being noted that in episode 6, at the Favorite Character Awards, for a split second, Jax was emotional from Pomni's and their fight.