As of right now, all we know is that Superman will appear in the first two episodes of Supergirl when it hits The CW this Fall. However, a new photo and video from the Vancouver set (via Spoiler TV) show off some very interesting action with the Man of Steel as he dons a modified costume while heading into battle against an unknown villain wearing some sort of glowing green device over his chest.
Chances are that this is Metallo in his human form, but it could just be some sort of random villain. That strange device over the symbol on his chest seems to be protecting Superman anyway as he deals with his foe pretty easily, but it will be interesting seeing how this factors into Supergirl when it airs later this year. Do you have any theories on what's happening here? Share your thoughts below.