At the time Supergirl was picked up to series on CBS, it was the last of the networks to finally jump into the comic book market. The show's first season stumbled due to some growing pains, but audiences stuck around with Supergirl pulling in millions of viewers week-to-week. Though unable to compete with network staples like Big Bang Theory and the NCIS franchise, Supergirl was still an instant hit.
Which is why it seemed odd that CBS waited so long to announce a second season. When news finally broke that Supergirl had been renewed but moved to sister network The CW, fans were relieved. Given its shared timeline with the rest of the DC properties at The CW (iZombie excluded), it was easy to wonder why the series wasn't on The CW in the first place. Grant Gustin's cross-network crossover appearance as Barry Allen/The Flash proved just how well things could work within the shared Arrowverse.
In an effort to clear the air about the move, Glenn Gellar, President of Entertainment at CBS, set the record straight about misconstrued comments. During the CBS panel at the TCA summer press tour, /Film reports Gellar said:
“I didn’t say Supergirl didn’t work for us. It actually worked very well. It averaged over 10 million viewers a week. But at the end of the day, we really looked at the situation. We said, ‘How can we both win from this?’ We co-own The CW so this was an opportunity for both CBS and Warner Bros. to really benefit from the success of the show. They produce it. We co-own the network and there’s nothing to say that if we hadn’t made the right deal with the CW that we wouldn’t have taken it back on Monday nights or another time.”
Without a doubt, the move will have an impact on the series, likely in the prominence that Cat Grant (Calista Flockhart) has as head of CatCo. The entire production was moved from studios in Burbank, CA to Vancouver, BC Canada, which is home to most CW properties. New cast members like Tyler Hoechlin as Clark Kent/Superman and Lynda Carter as the President of the United States are sure to be fun additions to the series.
A spot at The CW also opens the doors for more frequent and bigger crossover events. In fact, the network may be filming one of those crossovers very early in their shows' seasons. Plus, in the crossover event planned every winter on The CW, fans can expect one, singular threat with Supergirl being the focus.
So the big question now is will those 10 million weekly viewers follow Supergirl to The CW, dethroning The Flash as the CW's most watched series? Over its first two seasons, The Flash averaged about 3.5 million viewers per episode, which is close to a million more viewers than the second most popular show, Arrow.
Though CBS may have let Supergirl go, Gellar said the network is open to another superhero series: “If we heard the right superhero pitch and we thought it was for us, we would absolutely buy it. It has to fit our brand and it has to work.”
The Flash season 3 will premiere Tuesday October 4th at 8pm on The CW, Arrow season 5 will premiere in the same timeslot on Wednesday October 5th, Supergirl season 2 on Monday October 10th, and Legends of Tomorrow season 2 on Thursday October 13th.