Man-Bat

Man-Bat (The Werebat or Dr. Robert K. Langstrom) is a fictional Batman character who appears in American comic books published by DC Comics. He used to be a scientist until drinking a chemical that makes him turn into a half bat half man. His name can sometimes be confused with Batman. 
The character has been featured in various media adaptations, such as feature films, television series and video games. He was voiced by Marc Singer in ' and Loren Lester in '.