Bio: Scientist Kirk Langstrom worked as a Zoologist at the Gotham
City Zoo, experimenting with bat mutagen to create a serum to replicate
the creatures' long life. After testing the serum on himself, Langstrom
became the vicious Man-Bat. Though Batman eventually cured Langstrom,
his obsession with the power of the Man-Bat compelled him to take the
serum again and again. Francine, Langstrom's wife and colleague, was
accidentally cut by a sliver of glass from a vial which contained the
bat mutagen and also became a Man-Bat at one point.