Clayface

A cosplayer dressed up as Clayface

Clayface is a series of fictional Batman villains who have the power to turn into any form because he is made out of clay. He has appeared in American comic books published by DC Comics. In most cases, Clayface was an actor Basil Karlo who used a type of skin medicine to help his skin which would later cause him to have the clay appearance.

He was voiced by Ron Perlman in Batman: The Animated Series.