Leonard Norman Wein was born in New York on June 12, 1948. He received an art degree from Farmingdale State College. He would become a prolific comic book writer. He and Marv Wolfman sold their first work to DC Comics in 1968. Wein wrote for Batman, the Flash, Superman, the Justice League of America, and numerous other comics series. He and Bernie Wrightson created Swamp Thing, who first appeared in 1971. In 1975, Wein and David Cockrum created new characters for the relaunch of Marvel Comics' X-Men including Storm, Nightcrawler, Colossus, and Wolverine, who first appeared in an Incredible Hulk story Wein wrote. Wein was an editor for Marvel, DC and Disney Comics. In 1986, he was editor on the Watchmen series by Alan Moore. He had writing credits on numerous television shows, many of them based on characters he had helped create. He died on September 10, 2017 at the age of 69.