|Real name:||Dr. Kirk Langstrom|
|Portrayed by:||Peter MacNicol|
Dr. Kirk Langstrom was an employee and scientist at Wayne Enterprises. In an effort to become the ultimate "Bat" in Gotham, Dr. Langstrom began working on a mutative serum that would transform him into the extremely powerful and evil Man-Bat. One day Bruce Wayne, CEO of Wayne Enterprises, inquired about the subject and purpose of his experiments, and Langstrom told Bruce that he was trying to cure his niece's deafness. Bruce soon discovered that Langstrom was lying after a visit to Langstrom's niece. Bruce got back to Wayne Enterprises, and after looking through Langstrom's journal, discovered that he wanted to be like the Batman. Langstrom didn't know that Bruce Wayne was Batman and took a dose of his new serum, causing him to transform into Man-Bat, terrorizing the city during his newfound need for blood. The Man-Bat wreaked havoc throughout Gotham, but was eventually apprehended when his serum wore off.
When transformed into Man-Bat, Langstrom has increased strength, a sticky mucus that binds specific areas on the victim, razor-sharp claws, a thirst for blood (his first foray into Man-Bat led him to the Gotham Zoo, where he sucked the blood out of animals), and sees via the means of a his new sonar vision. While the world looks solely black-and-white to him, objects emitting heat will show up as solid white.
In the episode Pets, The Penguin used a sonic device to take control of Man-Bat's mind, using Langstrom as a tool to steal gold. Eventually Batman put together his own sonic device and used it to turn Man-Bat against the Penguin.
Man-Bat was later among the many supervillains captured by Rumor. Following this incident, Man-Bat was sent back to Arkham Asylum.
After serving time in Arkham he returned to an honest life as a scientist, promising never to use his formula again. Sadly that same formula was found by the Terrible Trio who were able to alter it to change people into other kinds of animal hybrid. When Batman suspected him as the cause of the hybrid related crimes, he had Langstrom develop an antidote.
- Langstrom seems to have albinism.
- The bat DNA he uses is that of vampire bats.