Although the heroes of Arrow, The Flash, DC’s Legends of Tomorrow and Supergirl joined forces last year to battle the Dominators in the ‘Invasion’ story arc, the main story didn’t really kick in until the final scenes of Supergirl, something that the producers hope to rectify next time around with “a true four-way crossover” between the four DC shows.
“Next year, we’re hoping to do a true four-way crossover,” executive producer Andrew Kreisberg tells EW. “The great thing about our dear friends at the CW and Mark Pedowitz picking the shows up as early as they did has allowed us to start building the schedules for next season. One of the big things we learned from two years ago, which made the crossovers this year slightly easier, was building in shut-down days, where shows just went dark. The single hardest factor in doing the crossovers is actors’ availability because the shows keep going on. You’re basically juggling four shows worth of schedules.”
““The thing that we didn’t really plan on — because we weren’t aware that we were going to switch Supergirl from CBS to CW and it was really going to be part of it — that was the one show that didn’t have built-in shut-down days, so all the other ones did,” Kreisberg continued. “Melissa [Benoist] ended up being heavily in Flash and then in Arrow, so Supergirl was the one we needed to shut down the most and it was the one that we didn’t have any opportunity to. Now that we’ve gotten the early pickup and we’ve started designing the seasons, we’re building in those dark days, and actually more dark days on Supergirl than the other shows, to make it a little easier.”
You won’t have to wait until next season for another team-up, as Supergirl and The Flash will be joining forces once again on March 20th and March 21st for a two-part musical crossover.
