|Real name:||Dr. Kirk Langstrom|
|Portrayed by:||Marc Singer|
|Appearances:|| On Leather Wings|
Terror in the Sky
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 under the tutelage of his father-in-law, Dr. Marsh. Dr. Marsh was obsessed with the idea that humanity would not be able to survive a mass extinction, whereas bats would, and devleoped a serum that would give people bat-like abilities to survive. However, Dr. Marsh was unwilling to test the serum, whereas his son-in-law Dr. Langstrom was. After testing the serum on himself, Langstrom became the vicious Man-Bat. Though Batman eventually cured Langstrom, the creature would make future appearances.
Dr. Kirk Langstrom (voiced by Marc Singer) is a zoologist at the Gotham City Zoo. He first appeared in "On Leather Wings", where he steals a serum at a chemical lab. Langstrom also has a wife named Francine. One night, Langstrom drinks the serum, when Batman arrives to question him - revealing himself as the thief of the serum from the chemical labs. Langstrom transforms into a half-man, half-bat creature, and turns on Batman. Francine arrives at the lab and discovers that the creature is her husband. Langstrom is cured and returns to his wife. Langstrom next appears in "Tyger, Tyger" where he analyzes the chemical that Dr. Emile Dorian used in his experiments.
In the episode "Terror in the Sky", Langstrom is having a dream that he transforms into Man-Bat, and he begins to commit crimes. Then, Langstrom is awakened, just to find the remains of the fruit and scratches from a rag. Then, as Francine decides to go to another city, due to Langstrom's inability to control the power of the Man-Bat, he then discovers that the other Man-Bat turns out to be Francine herself, accidentally exposed to an alternate man-bat serum. In the end, Batman cures Francine, and she returns to her husband.
When Batman: The Animated Series was revamped into The New Batman Adventures, Langstrom as Man-Bat never appeared in the new show. However, Langstrom did make a cameo in Bruce Wayne's wedding in the episode "Chemistry", so he appears to be finally cured. In the comic Batman: Gotham Adventures, which is based on the show he makes an appearance in issue #18.
In the Justice League Unlimited episode "The Doomsday Sanction", Professor Milo mentions that Dr. Langstrom's research has proven useful to his experiments splicing together human and animal DNA for the Cadmus Project. This ended with a disaster when a mutated warthog was mentioned to have destroyed his lab.