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The Batman: 1x4

The Man Who Would Be Bat

A flock of bats lead Yin and Bennett to Wayne Industries, where Bruce has a scientist named Dr. Langstrom working on a project related to bats. In truth, Langstrom actually develops a serum that can turn him into the “”Man-Bat””, so people will fear him. Man-Bat goes out of control and flies out into the city, feeding on animal blood.

The Batman: Season 1 Episode 4
Oct. 30, 2004