Supergirl flies off to another Earth to help with an alien invasion and leaves her friends behind. Where J'onn J'onzz would've been a lot of help in a fight, the one who might be the most upset for missing out would've been Winn Schott. Seeing all of the heroes, talking tech with Felicity Smoak and Cisco Ramon… He would've totally been in his element. How will he react?. Actor Jeremy Jordan told EW.com:
Winn doesn't have a lot of time to be bummed out because of what happens in the episode after that.
The first episode after the break is number 209, Supergirl Lives directed by Kevin Smith. Since Winn is not only working with the DEO but also moonlighting as Guardian's tech-support, it's hard to imagine what else he could have on his plate… though I keep thinking he's going to end up in a romantic relationship with Lena Luthor.