This is a one-shot villain for Captain Japan to fight.

Femme Fatal is a sexest robber who hates men and take adventage of women's trust in sisterhood so that she get's away with her crimes. But she fights Captain Japan twice and both times he beats her in combat (because she's not a very good fighter, and her only weapon is a oddly shaped gun). After her second fight against CJ, she steals a container from a lab that held an alien parasite and combines with her to mutate her into a monster called Fatal-X (which is more powerful then her), and unlike Femme Fatal (who it's using as a host body), the parasite is a far better fighter and armed with a trident. It is finally defeated by the combine skills of Alpha-Girl and Captain Japan and sent back to the lab, while Femme Fatal was arrested and sent to prison for life by S.P.D.

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