Jax is an anthropomorphic periwinkle cartoon rabbit whose design elements evoke the look of rubber hose characters. He has long bunny ears on the top of his oval-shaped head, and his overall build is 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 his mouth is opened, his teeth appear sharp and jagged. 