when did the original green lantern come out
Green Lantern Martin Nodell (using the name Mart Dellon) created the first Green Lantern. He first appeared in the Golden Age of comic books in All-American Comics #16 (July 1940), published by All-American Publications, one of three companies that would eventually merge to form DC Comics.
Arrowverse The first television series was Arrow, based on the character Green Arrow, which debuted in October 2012. The universe was expanded with the series The Flash in October 2014, which is based on Barry Allen / Flash. The universe expanded further in August 2015 with the animated series Vixen on The CW Seed, and again with the live-action team up series Legends of Tomorrow in January 2016. The franchise has also crossed over with DC Comics television shows which air on other networks; Arrow crossed over with the short-lived NBC series Constantine in the former's fourth season, while there have been multiple crossovers with the Supergirl TV series, primarily following its move from CBS to The CW.