The Arrowverse was not originally planned, reveals the producers. 1 / 8
Greg Berlanti: "Each step was a surprise" in getting to where the Arrowverse is today. 2 / 8
Marc Guggenheim remembers answering "No" in 2012 about introducing other super-powered heroes. 3 / 8
Flash's Supergirl crossover happened due to a "desire" seeing the actors together, says Sarah Schechter. 4 / 8
Arrow premiered in 2012, and later introduced Barry Allen in season 2. 5 / 8
Batwoman is the latest show in the shared universe. 6 / 8
Superman & Lois is currently being developed. 7 / 8
The massive Crisis on Infinite Earths event begins December 8 in Supergirl. 8 / 8