Basil Karlo (a.k.a. Clayface) is a villain from the Batman series. He used to be an actor, but he went crazy when one of his movies was remade with a different actor in the leading role. He then killed several of the movie crew, before he was stopped by the Batman and Robin.
He is a man made out of clay. He can assume any shape, control clay, bury his enemies with clay, and is super-strong.