Crisis on Infinite Earths definitely isn't the first crossover in the Arrowverse which The CW has tackled, but it's definitely the most ambitious. Bringing together Supergirl, Batwoman, The Flash, Arrow, and Legends of Tomorrow, in addition to various characters from across the DC Universe, the mega-crossover finds the fate of multiverse at stake. The CW has released a new trailer for Crisis on Infinite Earths, which features looks at several incarnations of Superman as well as Kevin Conroy (who voiced the Dark Knight in Batman: The Animated Series) as an older Bruce Wayne.
Although I don't watch any of the shows which will be making up Crisis on Infinite Earths, I must admit that I'm quite curious to see how they pull all of this together. Arrowverse executive producer Greg Berlanti said that they're doing all they can to honour the original story.
I never feel anything other than a sense of responsibility. Whenever we do an iconic story line or we do something that reminds us really vividly of one of those books that meant a lot to us, we have a sense of pressure and obligation of ‘Oh wow, we really don’t want to mess this up’ even more so than we usually do. So that fear overrides any kind of other emotion. It’s the closest I ever feel to being a kid again, without a doubt. You just get the same sensation, and you didn’t even realize that you locked it up and put it away.
Further guest-stars include Brandon Routh, Tom Welling, and Tyler Hoechlin as various incarnations of Superman, Kevin Conroy as Bruce Wayne, Jon Cryer as Lex Luther, Johnathon Schaech as Jonah Hex, Erica Durance andErica Durance and Bitsie Tulloch as Lois Lane, and Ashley Scott as Huntress, with Black Lightning's Cress Williams, The Flash's John Wesley Shipp, and Batman's Burt Ward also set to make appearances. The Crisis on Infinite Earths crossover will begin with Supergirl on December 8th, before continuing with Batwoman on December 9th, The Flash on December 10th, and will take a break until the new year when it picks up with Arrow and Legends of Tomorrow on January 14, 2020.