Donatello "Donnie" Hamato, a 40-year-old spiny softshell turtle mutant, stands at 7.5 feet. His jade green skin, heterochromatic eyes (blue and red), and soft brown-green shell with light brown plastron define his appearance. Donnie sports purple geometric markings, fangs, and claws. While usually unassuming, he becomes intimidating when angered. His physique is toned with lean muscles, and he has three fingers and toes on each limb.