can you name any two of such tv series?
"The Flash", "Legends of Tomorrow", "Supergirl"
Arrowverse
"The Flash" in 2014, and the animated web-series "Vixen" in 2015. The franchise was further expanded in 2016, when in January of that year a new series titled "Legends of Tomorrow" debuted, starring characters that originally appeared on both "Arrow" and "The Flash". Later that year, the CBS series "Supergirl", having already crossed-over with "The Flash", was moved to The CW for its second season, where it has remained since. A second animated web-series, "", was released in 2017, which followed Ray Terrill / The Ray, who would make a live-action appearance during that year's crossover event "Crisis on Earth-X". I
when does the flash show up in arrow December 2, 2014 is this a film? It is an Arrowverse crossover event what do you mean by this first term you used in your answer? The Arrowverse is an American media franchise and a shared universe that is centered on various interconnected television series when was it launched? October 2012
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Arrowverse [SEP] Introduction
In addition to the live-action and web-based series, the franchise has spawned three promotional tie-in live-action web series, "Blood Rush", "Chronicles of Cisco", and "The Flash: Stretched Scenes"; released in 2013, 2016, and 2017 respectively. A fifth series, "Batwoman", premiered in 2019, with a sixth, "Superman & Lois", scheduled for 2021. Since 2014, there has been a yearly crossover event involving many of the live-action series of the Arrowverse. Additionally, Matt Ryan has reprised his role as John Constantine from the NBC series "Constantine", initially in guest appearances in episodes of "Arrow" and "Legends of Tomorrow", before becoming a series regular for the latter, in addition to continuing storylines from the former series.