Crossover storylines are a common occurrence in the world of comic books, and as shared superhero universes continue to grow in popularity on television, sharing characters has become even more commonplace. The CW regularly features crossovers between its two main DC Comics shows, The Flash and Arrow, and even used both to launch the network’s third comic book series, Legends of Tomorrow. Now, The Flash’s Barry Allen (Grant Gustin) will visit Kara Danvers (Melissa Benoist) on Supergirl in the upcoming episode ‘Worlds Finest’, marking the first crossover between The CW and CBS’ DC series.
Part of what made the crossover possible is the shared creative teams behind The Flash and Supergirl; Greg Berlanti helped develop both series, along with a team of producers that includes The Flash showrunner Andrew Kreisberg. Now, the pair of producers break down The Flash and Supergirl crossover and whether we can expect to see Kara venture to Earth-1.
In an interview with THR, Berlanti was asked if the upcoming appearance of Barry in National City could ever be reversed, with Supergirl appearing on The Flash – or another CW series in the network’s Arrowverse. He responded: “We would love that. We’re waiting to see the audience reaction from something like this.”
Berlanti went on to say that “in a perfect world” the crossover would have featured both Gustin and Arrow star Stephen Amell – the latter of which has offered his support of the Supergirl and The Flash crossover as helping to build out the DC TV universe. But, as Berlanti explained, they had been hoping to do a crossover since casting Benoist as the Girl of Steel:
“One of the things that really kept the flame and the torch for it alive was a lot of journalists and the fans online, that consistent feedback throughout the year and enthusiasm for the idea. We always wanted to do it, from the day we cast Melissa. It was exciting to see them onscreen together. But a few things had to go right. We were introducing the multiverse on The Flash and that had to work.”
In terms of enthusiasm for the crossover episode, both CBS and The CW have put their weight behind promoting ‘Worlds Finest’. A new trailer for the crossover aired during a recent episode of The Flash, and CBS has released a poster, a gallery of promotional photos, and a handful of previews for ‘Worlds Finest’ – all effectively generating excitement for the event from comic book fans and casual viewers of both series.
As for what fans should expect from the storyline of ‘Worlds Finest’, Kreisberg spoke about how Barry will fit into the world of Supergirl:
“It’s not just a gimmick episode. She really needs him this week because of the things that she’s been dealing with. Kara is just starting out and she’s had a crisis of conscience because of the red kryptonite episode. I always think back to ‘Hush,’ from Buffy. On its own, that’s the one where nobody could hear anything and nobody could speak. But it was more than that. The Flash coming to Supergirl really helps Supergirl overcome the challenge that she had been dealing with. His advice to her about how she should be living her life is about to have repercussions as far as Jimmy [Mehcad Brooks] is concerned.”
It seems the possibility of future crossovers between The CW and CBS hinges on the success of ‘Worlds Finest’ and the reception from critics and fans alike. Although the crossover events on The CW between Arrow and The Flash have seen success in terms of ratings and fan excitement, they haven’t been the most critically well-received episodes. But, given the excitement generated for this upcoming crossover as well as the obvious care Kreisberg, Berlanti, and their team took in crafting ‘Worlds Finest’, the episode certainly has the potential to open the door to even more crossovers between Supergirl and its CW counterparts.
The Supergirl and The Flash crossover episode, ‘Worlds Finest,’ airs next Monday @8pm on CBS.