3) Meet The Legion Of Super-Heroes
Since season 2 of the show, Supergirl has teased the existence of the Legion of Super-Heroes in its universe. Superman’s Legion Flight Ring has been spotted in the Fortress of Solitude on several occasions, for one, and with season 3, we hope that the team will finally be introduced in the flesh.
For those not in the know, the Legion are a group of heroes from the far future who are usually presented as being a major part of Clark Kent’s teenage life, as they come back in time to befriend the Boy of Steel. Both Supergirl and Mon-El are also members of the Legion in the comics.
We could be wrong, but the show might have already set-up a way for them to appear. In the season finale, Mon-El is seen being sucked into a wormhole. This could easily fling him into the far future, where he could ally himself with the Legion and then find his way back to the 21st century – with his new superhero friends in tow, of course.