Bob Bishop

Bob Bishop is and evolved human with the ability to change different substances into gold.

Alchemy
Bob's ability was alchemy. This allowed him to change one element into another. She demonstrated this when he turns a spoon into gold. He was also able to turn people into pure gold as well. He demonstrated this with Hampton Connolly.

It is unknown if he can turn liquids and gases into gold as well as solids. He only demonstrated his ability on solids before he died.