Chemical Chameleon

Chemical Chameleon is a SuperNaturals member who can turn into any element or chemical he is touching. If touching two elements, he can with some effort turn into a chemical made of both in any ratio; for instance, if he is touching water and a diamond, he can turn into carbon dioxide, because he is touching carbon and oxygen (in the water). He carries around a small periodic table in which each square is made of the annotated element, allowing him to quickly have a large variety of chemicals within his ability to transform into. He retains his body shape even when he turns into a gas or liquid, and can always think, talk, etc., regardless of how chemically impossible that is for the given element(s).