Green Arrow
Green Arrow is a fictional superhero who appears in comic books published by DC Comics. Created by Mort Weisinger and designed by George Papp, he first appeared in "More Fun Comics" #73 in November 1941. His real name is Oliver Jonas Queen, a wealthy businessman and owner of Queen Industries who is also a well-known celebrity in Star City. Sometimes shown dressed like the character Robin Hood, Green Arrow is an archer who uses his skills to fight crime in his home cities of Star City and Seattle, as well as alongside his fellow superheroes as a member of the Justice League. Though much less frequently used in modern stories, he also deploys a range of trick arrows with various special functions, such as glue, explosive-tipped, grappling hook, flash grenade, tear gas and even kryptonite arrows for use in a range of special situations. At the time of his debut, Green Arrow functioned in many ways as an archery-themed analogue of the very popular Batman character, but writers at DC subsequently developed him into a voice of left-wing politics very much distinct in character from Batman.
Flash vs. Arrow
The first indication of potential crossover events in the Arrowverse occurred on The CW during the 2013–14 television season, when Barry Allen was introduced in the eighth episode of "Arrow"s second season ahead of the debut of "The Flash". In July 2014, it was announced that the eighth episodes of the third season of "Arrow" and the first season of "The Flash" would be a two-hour crossover event. The crossover was originally planned as the seventh episodes of each series, but was pushed back due to the large amount of work needed to accomplish it. In particular, the schedule coordination of trying to "jam another episode into the 23-episode schedule for each of [the] shows." Marc Guggenheim, creator and executive producer on "Arrow", explained that there was "no financially responsible" way of executing the crossover, with budgets being blown, long hours and the actors having to film scenes from both series on the same day.