Dennis Joseph O'Neil (1939-2020) was an American comic book writer and editor, principally for Marvel Comics and DC Comics from the 1960s through the 1990s, and Group Editor for the Batman family of titles until his retirement. His best-known works include Green Lantern/Green Arrow and Batman with Neal Adams as well as Iron Man.
Credited within these Comics
Credited Characters
Earth-616
Prime Earth
Prime Earth
Earth-616
Prime Earth
Earth-616
Prime Earth
Prime Earth