Babs/Helena
Well, i think it goes beyond just beign female crime fighters. They were both tough headstrong women who more often than not took great chances, they both have a lust for life. Babs has said more than once she never felt more alive than when she was flying through the air. They both were intelligent, and even though they knew better, they tended to dive into situations without thinking first (not often, but enough to draw a resemblance.)