The CW's "Crisis on Infinite Earths" will be the biggest Arrowverse crossover yet, bringing together characters from Supergirl, Batwoman, The Flash, Arrow, DC's Legends of Tomorrow and Black Lightning. What's more, it will feature guest appearances from the likes of Tyler Hoechlin and Elizabeth Tulloch's Superman and Lois Lane, Jon Cryer's Lex Luthor, Kevin Conroy's Kingdome Come Batman and Tom Welling and Erica Durance's Lois and Clark from Smallville. Now, to top it all off, producer Marc Guggenheim has revealed there will be plenty of behind-the-scenes footage.
"There will be a fair amount of BTS material," Guggenheim told a fan on Twitter when asked if there would be footage of the actors interacting with one another for the first time.
There's no word yet on when this footage may be released, but it's likely to come after the crossover's conclusion in January.
"Crisis on Infinite Earths" begins Sunday, Dec. 8 at 8 p.m. ET/PT on Supergirl, then continues in Batwoman on Monday, Dec. 9 at 8 p.m. ET/PT and in The Flash on Tuesday, Dec. 10 at 8 p.m. ET/PT. After the winter hiatus, the crossover will conclude on Tuesday, Jan. 14 in Arrow at 8 p.m. ET/PT and in DC's Legends of Tomorrow at 9 p.m. ET/PT.