The Flash and Supergirl Crossover: Is it a good idea?


It’s official–Supergirl and The Flash are officially teaming up in a special crossover event happening in March. Executive Producer, and god of the TV superhero at the moment, Greg Berlanti made the surprise announcement on Wednesday.

While there’s a lot to be excited about, I can’t help but have mixed feelings towards this. Unlike The Flash, which was born out of Arrow as a genuine spin-off, Supergirl has been able to stand on its own two feet. Should the expansive DC universe Berlanti has created extend itself even further to include National City and Metropolis? There’s no doubt it will make for great television, but how will it impact the shared universe moving forward?

To sort out these mixed emotions, here is a pros and cons list of why the Supergirl and The Flash crossover could be great or why it could be a big mistake.

Cody Pickens/Variety
Cody Pickens/Variety

Pro: The Flash and Supergirl would make an adorable team

It’s no question that Melissa Benoist and Grant Gustin are endlessly charming as the leads of their respective shows, so their combined powers are bound to melt our hearts in an instant. Where Barry and Oliver have that mentor/apprentice relationship, I see Barry and Kara working alongside each other as genuine partners and maybe friendly rivals when it comes to who’s faster. Not to mention this is the ideal moment for the cast of Supergirl to show off their vocals for an impromptu musical number.

Okay, maybe not, but a girl can dream, right? Hey, if Grey’s Anatomy can do it, anyone can.

Con: It means Superman is a huge jerk

Officially mixing the worlds of Arrow, The Flash and Supergirl sounds amazing on paper, but it also opens up a massive Pandora’s Box of continuity issues within the shared universe. If Metropolis and National City have existed alongside Starling and Central City this whole time, then it means Superman didn’t lift a finger when the Glades were demolished in Arrow‘s Season 1 finale, or when the singularity appeared at Central City.

It’s admittedly unfair to point out inconsistencies from before Supergirl got the greenlight (though, let’s be honest, nitpicking is every comic book nerd’s favourite past time), but that doesn’t mean there won’t be problems in the future. The next time Star and Central City are left on the brink of destruction, why won’t Supergirl or Superman fly by to help? Logically we know that it’s because of filming schedules and competing networks, but all that accomplishes is pulling us out of the story. So, in the face of maintaining that fourth wall, we’ll have to settle with the fact that Superman is a selfish jerk.

Pro: This could open the door for Green Lantern’s appearance

While The Flash introduced the world of metahumans to Arrow, Supergirl will be the one to introduce the concept of aliens on other planets. Several times now both Arrow and The Flash have mentioned or even visited Coast City and Ferris Air, which is connected to the original Green Lantern, Hal Jordan. It’s very possible that all of these Easter Eggs are leading up to the official introduction to the Green Lantern Corps, so confirming that alien life is very much part of this universe would be a major step towards that.

Katie Yu/The CW
Katie Yu/The CW

Con: Superhero fatigue

Berlanti is arguably the best thing that’s happened to DC comics in terms of live television in a long time. He built on the Christopher Nolan Dark Knight concept of a gritty, realistic comic book story with Arrow, then followed it up with a celebration of the campier side of comics with The Flash. However, with the need to rival Marvel’s innovation of a shared universe, the current TV landscape is now abundantly full of superheroes. Not only that, but all of these shows are becoming a packaged deal. It’s possible that the pressure of keeping up with all of DC’s shows, no matter how entertaining they are, could result in people getting fed up and losing interest.

Pro: The possibilities are endless

Bringing the world of Supergirl into the shared DC universe will open up an enormous number of possibilities for The Flash, Arrow and Legends of Tomorrow moving forward. Our beloved characters will now be living in a world where magic, time travel, alternative dimensions and visitors from other planets are real-life circumstances. The sandbox which the writers can play in has essentially evolved into an endless ocean of potential.

Con: But is that a good thing?

Sometimes all that potential becomes too much. The Flash has proven that audiences are accepting of the weirder aspects of the comic book world, but the farther we delve into it, will that still hold true? The expectations will only get higher from here.

Are you excited about the crossover or experiencing some mixed feelings? Share your thoughts in the comments below.

Supergirl airs Mondays at 8 p.m. ET on Global and CBS, and The Flash airs Tuesdays at 8 p.m. ET on CTV and The CW.