DC Database

The Mad Monk is Niccolai Tepes, a vampire enemy of Batman who leads a cult called the Brotherhood from an abandoned castle on the outskirts of Gotham City. His followers, among whom is the gothic Dala, feed upon the blood of captured victims, such as Julie Madison. He is notable for being the second super-villain to ever face Batman in publication history as well as the main-antagonist of the Dark Knight's first ever two-part storyline.

The Mad Monk was created by Gardner Fox, Bob Kane, and Sheldon Moldoff, and first appeared in Detective Comics #31. (1939)