The franchise began with Arrow, based on the character Green Arrow, which debuted in October 2012. It was followed by 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 fifth series, Batwoman, premiered in 2019. A second animated web-series, Freedom Fighters: The Ray, 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". 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. 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; the 1990 CBS series The Flash was retroactively added to the franchise when John Wesley Shipp reprised his titular role in crossover event "Elseworlds".