René Auberjonois the voice of Dr. March

                                                                                        Batman : The Animated Series                                                                                                                                                  On Leather Wings                                                                                                                                                                     Dr. March is a scientist and the father of Francine Langstrom and Kirk Langstrom's father-in-law. When Bruce Wayne meets him for the first time it is made very clear that he likes bats more than he likes people. He also states that bats will out live humans because of evolution. This leads Batman to believe that Dr. March is the Man - Bat. However it is revealed towards the end of the episode it was revealed that Dr. March was afraid to go any farther with his research on bats and that Kirk Langstrom continued his research and turned himself into Man - Bat.                                                                                                                                                                        Terror In The Sky                                                                                                                                                                                                         In this episode it was revealed that Dr. March had continued Kirk's bat research and had created a new Man - Bat formula. When he discovered that his daughter Francine had accidently been exposed to the Man - Bat formula and became the Bat - Creature he gave up his bat research forever.