With the San Diego Comic Con fast approaching, the rumours about Season 2 also flourish.
The following rumours were posted on the Bleeding Cool site
Kathy/Kate Kane and her alter ego, Batwoman, will appear on Supergirl as a recurring role. She will be Maggie Sawyer’s ex, whose adventures as Batwoman occasionally take her to National City.
Barbara Gordon will also appear as Oracle (mostly so as not to have Batwoman AND Batgirl).
Babs will develop a strong friendship with Kara, Supergirl. The Oracle/Batwoman relationship is being modeled after the original Chuck Dixon Era Birds Of Prey, but with Kathy/Kate as the operative instead of Dinah.[/spoiler]