Although Mewtwo's genome is almost identical to Mew's, the genetic engineering used to complete its creation nevertheless resulted in Mewtwo's appearance being very different in comparison to Mew's. It appears as a bipedal feline that is tall and has a light gray physique with a pronounced and girthy purple tail and abdomen, voluptuous thighs, purple irises, bulbous fingertips, toned chest, crest-like pinnae, and a tube-like mass of flesh that connects from behind its head to the center of its upper back. Its appearance has been likened to "an over sized cross of cat, squirrel and kangaroo".