Mary Marvel predates an introduction.
Mary Marvel was one of the first female spin-offs of a major male superhero , and predates the introduction of Superman 's female cousin Supergirl -LRB- also created by Otto Binder -RRB- by more than a decade .	Otto Binder	Otto Binder	spin-offs	spin-off (media)	Superman	Superman	Supergirl	Supergirl (Kara Zor-El)
