This fall, Supergirl will premiere on CBS. The series will not immediately tie in to any other DC Comics series or films though, meaning that the future for the Last Daughter of Krypton is an open book. While Supergirl herself doesn't have the kind of rogues gallery or supporting characters that her more famous cousin does, she still has a few friends and adversaries that could show up in her series (some of which she can borrow from Supes if necessary). Here are 8 such characters that we'd like to see on the show...