Man-Bat (real name name Kirk Langstrom) is one of the many adversaries of Batman, first appearing in the Detective Comics #400. Kirk is a scientist on the Gotham Museum of Natural History, who admired the super-hero so much, that he created samples from various bat experiments, on purpose to understand to obtain their sonar power their nature. However, he is turned into grotesque hybrid and mindless monster in the process, forcing Batman to stop him for good. He appears in the Non-Disney vs. DC Villains War, working behind the scenes, mainly with CADMUS associates.
Non-Disney Vs DC Villains War
While working on his laboratory, Kirk is approached by CADMUS' associate, Alpha. He, openly, explains him the reason of his research on science, as his family, primarly his daughter, drove him into finding new approaches, unbestknown to him, that Alpha is secretly using the information he gave to him, to his own advantage.
In the later events, Kirk Langstrom joins fellow CADMUS' executive, Hugo Strange, on his scientific research on the alien warlord, Vilgax, brought unconscious by Bishop and Mr. Freeze, to understand it's nature and methods.