Clayface

Clayface is a Gotham-based villain whose sludgy clay body allows him to morph his form and create solid constructs.

History
The villain Lex Luthor has run numerous experiments designed to create something to combat his nemsis Superman. One such experiment trying to create a superman resulted in Matt Hagen being turned into the monster known as Clayface. Ever since this, Hagen has always been after Luthor, trying to kill him whenever he can get the chance. For instance, when Lex Luthor tried to take over Gotham City, Clayface disguised as one of his close associates and tried to kill him while he was fighting Batman, but Luthor managed to escape.

Clayface was hired by Cyborg Superman to be on his team to take out several members of the Justice League when he was posing as the real Superman. Clayface was among those who survived Cyborg Superman's betrayal of the team of villains, being able to survive the intense heat vision blast due to his regenerative abilities.

Quotations

 * 1) Clayface: LUTHOOOOR!!!