Gillian the platypus is a green female Platypus with long bangs, a tangerine bill, a peach tail, tangerine feet, blue eyes, a red headband, a ponytail, red and black headphones, a bracelet made out of red beads with a music note charm in the center of it, and a bracelet made out of the same red beads as her necklace around her right wrist. She is the sister of Adrian the Platypus, Lillian the Platypus, and Brody the Platypus. She also loves music, specifically the genre of rock.