No one knows where it came from, but it spread across the multiverse. A strange force, filled with power. It was hard to explain but could be understood as the combining to two ideas made real. Evil is Sexy. Rule 63. That the force of evil are some how more sexually appealing then the forces of good. Also that no matter what, there is an inverse gender/sex version of all beings in the multiverse. So this is what the force does in the universe...

It turns the force of evil into sex woman, especially if they started as men. This it did in many universes as it caused them to branch off from the main timeline. The question was often not if it would happen, but how it would happen. Since there were many variants which could occur.

Perhaps the villains are just turned into a beautiful woman? What they would look like if they were supermodels or porn stars... or both.

Perhaps they are instead fused with someone else? Perhaps a heroine? Perhaps someone the hero knows? Perhaps a hero's love interest? Or maybe a known beautiful woman, an appealing celebrity, is fused with them? Perhaps a woman from another universe, a world of fiction to someone, is fused instead? Whether the fusions are the true mixing of the two characters into a lovely lady, or merely the villain taking on that form, also varies.

All that is known is the people transformed sexy ladies who can be recognized as having been the villain before, becoming bisexual, and usually falling in love with a hero. If not the hero they fight. As well as the potential to seduce that hero, and others if needed.

So let's go to one of the worlds of the multiverse, and watch as we see the results of the force in that world....