The Flash/Arrow crossovers were huge hits for The CW this past season but it looks like Supergirl is staying fully with sister network CBS. The possibility of two shows on different networks crossing over is slim but since the CBS Corporation own 50% of The CW, their was a chance that Supergirl could appear in either of the shows. Executive producer of all three shows Greg berlanti has confirmed to Variety that CBS will not be sharing their heroine:
“The network has said publicly at this point they’re going to keep her to themselves. I always approach the shows as a fan first, so I would love to see (a crossover). I think in success, all things are possible. But there’s a lot that would have to happen before everybody might say yes to that.”
Berlanti's statement does not mean that a crossover will never happen but for now, CBS want to keep the Kryptonian hero to themselves. With the Legends of Tomorrow spinoff, would their be room for another corssover within The CW-verse or are you happy keeping Supergirl in isolation? Share your thoughts in the comments section below.