Archaeologist Rex Mason was exposed to the Orb of Ra in Egypt, and this changed him into one of the mythical Metamorphae, able to transform his body into any element, but trapping him in a hideous form, unable even to die. He used his powers to fight evil, though was often in conflict with Simon Stagg, wealthy and corrupt scientist and father of Rex's girlfriend, Sapphire.
Metamorpho was a prominent member of the Outsiders, and an occasional member of the Justice League.
Note:It is probable that some micros on this page relate to Metamorpho after the end of Earth-One in the Crisis on Infinite Earths, and should therefore be moved to a new page for a New Earth version of the character.