John Corben (Earth-8011)

"There's the reality! The metal within my flesh! It's all I am now! It's who I am... Metallo."

- - Metallo

John Corben was a former member of the United States Armed Forces who became a worldwide hitman and mercenary. After contracting a deadly disease, Corben joined forces with Lex Luthor who gave him newfound powers fueled with Kryptonite as Metallo, but at the cost of most of his body.