Michael Fleisher is an American author and comic book writer best known for his prolific contributions to DC Comics during the 1970s and 1980s. He wrote landmark runs on titles such as "Jonah Hex," "The Spectre," and "Deadman," bringing a notably dark and gritty tone to the medium. Beyond comics, Fleisher is also recognized for his encyclopedic reference work, "The Encyclopedia of Comic Book Heroes," a multi-volume series covering DC's most iconic characters. His writing helped shape the mature storytelling style that would come to define modern comics, leaving a lasting mark on the industry.