SUPERGIRL and ISIS are super heroines inspired from a little known GOLDEN AGE super heroine MARY MARVEL. She was the sister of CAPTAIN MARVEL who was one of the most popular super heroes for the 1940s. She was created by SCIENCE FICTION writer OTTO BINDER.

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SUPERGIRL and ISIS are super heroines inspired from a little known GOLDEN AGE super heroine MARY MARVEL. She was the sister of CAPTAIN MARVEL who was one of the most popular super heroes for the 1940s. She was created by SCIENCE FICTION writer OTTO BINDER.