Green Lantern
Green Lantern is the name of several superheroes appearing in American comic books published by DC Comics. While the original debuted in All-American Comics #16 (July, 1940), the associated characters and core concept have changed signficantly over its publication history; while the original concept was tied to a crime-fighting superhero who used the aid of a magic ring, the later concept (existing con-currently to the original) casts a set of characters in a science-fictional element as law enforcement officers.