Metamorpho was a reserve member of the Justice League.
When Rex Mason was exposed to the Orb of Ra, he was transformed into an Elemental Man and later became a stand-by member of the Justice League, where he uses his abilities to transform into any chemical to use against global threats.
- 5 Appearances of Rex Mason (Justice)
- 5 Images featuring Rex Mason (Justice)
- Quotations by or about Rex Mason (Justice)
- Character Gallery: Rex Mason (Justice)
|Justice League member|
This character is or was a member of the Justice League of America, or the Justice League in any of its various incarnations, sworn by a duty to act as guardians of America and the world by using their skills and/or superpowers to protect Earth from both interstellar and domestic threats.