Dennis O├НNeil began his career as a comic-book writer in 1965 at Charlton, where then-editor Dick Giordano assigned him to several features. When Giordano moved to DC, O├НNeil soon followed. At DC, O├НNeil scripted several series for Giordano and Julius Schwartz, quickly becoming one of the most respected writers in comics. O├НNeil earned a reputation for being able to -revamp├о such characters as Superman, Green Lantern, Captain Marvel тАЮ and Batman, whom O├НNeil (with the help of Neal Adams and Giordano) brought back to his roots as a dark, mysterious, gothic avenger. Besides being the most important Batman writer of the 1970s, O├НNeil served as an editor at both Marvel and DC. After a long tenure as Group Editor of the Batman line of titles, he retired to write full-time.