|Children:||Francine Langstrom (daughter); Kirk Langstrom (son-in-law)|
|Portrayed by:||Rene Auberjonois|
|First appearance:||On Leather Wings|
|Last appearance:||Terror in the Sky|
|Appears in:||2 Episodes|
|Dr. March Gallery|
While working at the Gotham Zoo, March became obsessed with bats, believing that they possessed the necessary hereditary traits to survive the next evolutionary cataclysm, while humans did not. Believing that the human race could only survive if they were to adapt certain bat-like attributes, March began researching a mutagenic formula that could bring about this transformation.
However, March's early work never got past the theoretical stage. His son-in-law, Kirk Langstrom, was the first one to produce a working formula, which he took himself, causing his transformation into the monstrous Man-Bat. March was aware of this, and helped to conceal the truth from the authorities. When Bruce Wayne dropped by the zoo, inquiring whether some sound and hair samples he had collected were from bats, March lied and said they were from common brown bats, when Bruce knew, in fact, that they were from the Man-Bat.
Batman apprehended the Man-Bat and injected him with an antidote to the formula, before returning him to the arms of his grateful wife, Francine.
March, however, was unable to give up his pet theory. Despite the havoc that had been wreaked by the Man-Bat, March continued to work in secret on refining the formula, until it was even more potent than Langstrom's version. He was still afraid to test it on himself.
One night, Francine startled him while he was working late at night, and she was inadvertently injected with a tiny droplet of the formula, which was powerful enough to periodically transform her into the second Man-Bat. When March realized that he had endangered his own daughter's life, he destroyed his research notes and abandoned the project.