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Dr. Kirk Langstrom was a scientist trying to find a cure for deafness using bat DNA but accidentally turned himself into the Man Bat.
Dr. Kirk Langstom (Man Bat)
Dr. Kirk Langstrom
for Dr. Kirk Langstrom in Batman I
Suggested by vincentwilliamsiii
Bruce Wayne’s debut as the Batman and tries to be the world’s greatest detective to learn the identity of this mysterious criminal.