The first group to be called Femizons were the women of Femizonia, a gynarchic future world in an alternate timeline where women had become Amazon-like warriors, ruling over male slaves.
[1] Thundra, a recurring enemy and ally of the Fantastic Four, originates from Earth-712.
They were enemies mainly for Captain America, and their goal was to conquer Earth and create a utopia where women ruled.
[4] Led by Superia, who claimed to be inspired by stories of Thundra's Femizons, the group consisted of a large number of established female criminals and super villainesses.
Superia gained Blackbird, Iron Maiden, MODAM, Moonstone, and Nightshade as her lieutenants.