He is made of a carbon based diamond-like material. As this is the strongest material known, he is nearly invulnerable. In human form, he appears Asian. There is some thought that a blow in just the right place might shatter him. He is devoted to his martial arts training and is considered the most skilled hand to hand fighter of the A.P.N.G.
He is very intelligent and quick witted but concerned with any potential vulnerability and therefore sometimes appears closed off and full of himself due to the fact he tends to keep to himself and strives for perfection.