The Flash And Supergirl Crossover Should Be A Yearly Traditional For The Arrowverse

Credit: CBS

Step aside, Superman and Batman. There’s a new fave superduo in town. It’s Supergirl (Melissa Benoist) and the Flash (Grant Gustin).

So far we’ve had two crossovers between just these two series (three if we count the mega “Invasion!” crossover). “Worlds Finest” and “Duet” have both been massive successes for the shows. They led to an uptick in viewership for Supergirl and The Flash. They’re fun and light-hearted romps that remind us that yes these shows are supposed to be about the fun of superheroics.

With “Duet” over with, I gotta say we need to make these crossovers a yearly tradition. Even more so then the bigger Arrowverse crossovers, I just want to see Supergirl and The Flash have their own crossover once a season. The main focus can be on either show, but I love seeing Barry Allen and Kara Danvers interact together.

Here are five reasons why a SuperFlash crossover should be an annual CW tradition.


Even the most cold-hearted cynic must melt in the face of the chemistry that bubbles between Melissa Benoist and Grant Gustin. From the first meeting, you truly believe in this transdimensional friendship and want to see it grow and thrive.

Kara was one of the few people who stood by Barry after finding out about Flashpoint. Barry offered her friendly heroing advice. We really though I just like seeing these two interact. They have such an easy rapport together. You know if this took place on the same Earth they would be frequent visitors to the other. And it all comes down to their hero-ing philosophies. Barry and Kara truly believe that they can better lives by being heroes. Sure things don’t always work in their favor, but they usually are pretty optimistic about their chances.

(Which is why The Flash going so dark hurts me to see this season.)

2) The Shows Are The Most Natural Pairing

Arrow has its gritty crime drama vibe. Legends of Tomorrow has to keep the time stream from folding in on itself. The Flash and Supergirl with their weekly meta/alien threat and optimistic tone (again usually The Flash has darkened post-Flashpoint) are a natural pairing.

With Cisco on The Flash and Kara having her inter-dimensional transport, the crossovers between these two shows are the easiest to make story-wise. Like Kara said, her Earth doesn’t have many heroes. Not every hero on Earth-1 can face down an overpowered meta. The two of them turning to each other for help makes sense. The shows don’t have to lose their tone either to accommodate the crossover.

I also want to see Winn (Jeremy Jordan) and Cisco (Carlos Valdes) in a room together. With the caveat of them knowing who the other is. I deserve to see that level of adorable nerdiness in one place.

Feasibly, I would just switch off every season. Have the next year be a SuperFlash crossover on Supergirl. Let Barry finally interact with Alex (Chyler Leigh). You wanna make it even bigger? Have it be that Kara and Barry have to fight a possessed Superman (Tyler Hoechlin). I can guarantee people will tune it to that.

3) It Makes Sense Narratively

A great crossover, I feel, should be able to balance the plots of both shows and develop the characters there. Due to the cross-network “Worlds Finest” that couldn’t have been accomplished. Don’t get me wrong, it was an amazing episode and advanced Supergirl‘s plot. “Duets” advanced the plot for both shows easily and efficiently as Kara and Barry go on a personal journey.

The effects of “Duets” will be felt on both shows for the rest of the season. Not only did it provide Kara and Barry a chance to talk with someone not invested in their group dynamics, it gave them a chance to process things together. You know what? Sometimes that is just needed. Once a season, Barry and Kara can be each other’s sounding board.

Plus it can be a place for other characters to grow as well. I want to see Joe (Jesse L Martin) have one of his Joe-ments with say Alex. I want to see J’onn (David Harewood) offer some advice to Caitlin (Danielle Panabaker). Sometimes you need an unbiased perspective of someone who understands how bizarre your life is based on their own bizarre lives.

4) You Can Have A Lot Of Fun With It

For the big multi-crossover events, you need a deeply involved story. But there are plenty of fun stories that can just be told with two superheroes. I mean look at how great Flash and Green Lantern worked together on Justice League.

We saw them face off against Silver Banshee and Livewire, the sang a sweet song under the Music Meister. Superman and the Flash do not get a lot of screentime in comics. It’s usually Superman, Batman and Wonder Woman. Or, even more usually, Superman and Batman.

Hell take some of those popular stories and adapt them to fit this pair. Have some CADMUS plot change the world with Lex Luthor as President and Kara as a fugitive with Barry. That’s just off the top of my head.

5) It’s Good For The Network

From a perspective of a network, these crossovers just make sense. Both “Worlds Finest” and “Duet” saw a rise in viewership for the shows. A rise in ratings, especially on a tiny network, is always a good thing. The build-up to these episodes was huge. More importantly, people were excited to see this pair share the screen together.

Since it’s proven that they work well together, then why not make this an annual tradition? The shows share the same network now. They both shot in the same place. This is something that the CW can capitalize on for a different kind of yearly tradition: the big event crossover in the fall with the SuperFlash crossover in the spring.

C’mon Berlanti and company, think of your fellow man and lend a helping hand. Give a little SuperFlash in our lives.

Supergirl airs Monday at 8/7c on the CW. The Flash airs Tuesdays at 8/7c on the CW.

Bec Heim

Senior Editor at 4YE
Rebecca "Bec" Heim is the Senior Editor for 4YE. She has a BA in English Literature from the University of Scranton. She also has an MA in Film-Radio-Television from Syracuse University and an MFA in Screenwriting from Boston University. She enjoys reading through her ever growing mountain of books, talking way too much about superheroes, and trying to reach transcendental state.
Bec Heim