Metamorpho is an associate of Batman and was a member of his team.
Physical appearance
Although still humanoid, Metamorpho's appearance is very different to that of a normal human; with chalk-white skin, a complete lack of both head and facial hair, and the absence of a nose. Metamorpho also doesn't appear to have toes (although this could be a conscious act of shape-shifting). Aside from these differences, Metamorpho has the appearance of a tall, lean-muscled adult man. When he became injured during battle his body adopted a more monstrous appearance; with a hunched stature, and horn-like protrusions and mouth-like openings present on his back and shoulders.[1]
Shape-shifting: Metamorpho can alter the shape of his entire body or parts thereof. He can also transmute his body into different elemental compounds, changing into a gaseous or a liquid state,etc.
Invulnerability: Metamorpho's body control at the molecular level also grants him some extent of invulnerability, making him impervious to bullets and sharp blades.[1]
Malleability: Metamorpho is also capable of stretching and bending his limbs as well as transforming his hands into simple mace and hammer-like shapes.[1]