Leonardo Hamato, otherwise known as Leo, is a 40-year-old man. Leo is a red-eared slider turtle mutant with lime green, scaly skin. There are yellow stripes on his upper arms and thighs. On his face, one red crescent moon-like marking over each eye. He has a dark brown-green shell with teal markings and mustard yellow plastron. Leo has icy blue eyes. Leo is 7.4 feet tall. He has a robotic right arm. His three-fingered, large hands have claws, and he has three-toed large feet.