DC's Legends of Tomorrow, or simply Legends of Tomorrow, is an American superhero television series developed by Greg Berlanti, Marc Guggenheim, Andrew Kreisberg, and Phil Klemmer, who are also executive producers along with Sarah Schechter and Chris Fedak; Klemmer and Fedak serve as showrunners. The series, based on the characters of DC Comics, airs on The CW and is a spin-off featuring characters introduced in Arrow and The Flash along with new characters, set in the Arrowverse, the same fictional universe. The series premiered in January 2016. Legends of Tomorrow has been renewed for a fourth season which premiered on October 22, 2018. On January 31, 2019, The CW renewed the series for a fifth season.