Jelly Opal is a huge fusion with six arms and legs, and an overall body type resembling a centipede. Her skin is light blue and light purple, and she has eight yellow eyes with black pupils and navy blue sclera. She also has a large sloped nose and full lips. Her hair is very light blue and is short and messy, being pulled backwards. Her arms connect to her shoulders and waist and are thin, while her legs connect next to each other going down her body. Her gemstones are on her forehead, chest, sternum, and navel and are teal, blue, yellow, and white.
She wears a blue and white skirt with pointed teal and dark blue shoulder pads, white gloves on her bottom pair of arms, and light yellow bangles on her top pair. She also wears blue pants with dull blue, dull indigo, and dull lavender leggings and blue and teal socks.