Clayface (DC Comics)

Clayface

Clayface is a villain that Bat man has faced on many occasions. There are many differing stories about Clayface. However, the Clayface here is a character who is able to change into people or create objects out of his clay like body. He is incredibly strong and dangerous.

Man Bat (DC Comics)

The Man Bat

Dr. Kirk Langstrom, a scientist specializing in the study of bats, develops an extract intended to give humans a bat's sonar sense and tests the formula on himself because he is becoming deaf. While it works, it has a horrible side effect: it transforms him into a hideous man-sized bat.

Information copied from http://en.wikipedia.org/wiki/Man-Bat