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Rex Mason (DCAU)

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Rex Mason was a former marine buddy of John Stewart, who was secretly engaged to his boss' daughter, Sapphire Stagg. Out of spite, Simon Stagg trapped him into a genetic experimental chamber and transformed him into Metamorpho, the Element Man.

Metamorpho later joined the Justice League.


  • Metamorphosis: Metamorpho can change each element on his body into something different or use his entire body as a chemical catalyst.
  • Elasticity: Metamorpho's favorite tactic is to turn his earth-based hand into a mallet or hammer to smash his opponents.[1][2]


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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.
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