Constantine is an American television series developed by Daniel Cerone and David S. Goyer for NBC, featuring the DC Comics character John Constantine. Matt Ryan stars as Constantine, a British exorcist and occult detective who actively hunts supernatural entities. The series aired from October 24, 2014 to February 13, 2015, over 13 episodes. On May 8, 2015, NBC canceled Constantine after only one season due to poor ratings.
Ryan would go on to reprise his role in guest appearances in The CW's Arrow and as a series regular in Legends of Tomorrow, retroactively setting the series within the Arrowverse. He also voices the character in the CW Seed animated web series, Constantine: City of Demons; the writer of the series J. M. DeMatteis stated it is a spin-off of the Justice League Dark film.