The Futa-Converter!

Nishi Fukawa was famed as the superhero/heroine and/or supervillain/villainess breaker. Neither morality, nor gender (of her targets, she definitively identified as female) mattered, so long as she was paid, or found her target attractive, she'd hunt them to the end of the earth to bury her mammoth cock inside them. The five foot tall, Asian bombshell was built like a bimbo, fought like a demon, and was endowed like a horse. Famously, when she permitted men to fuck her, they were only allowed in her ass. The pussy that was at the base of her mighty cock was still virginal. But her cock, her ass, and her mouth were experienced breakers. Her cock, in fact, was so ridiculous, that it might actually break people, some speculate that's why she fucks the superhuman, they're the only ones who could take her cock without being split, literally not figuratively.

Men, women, it didn't matter, if her cock came in them, they would become futas as well, though the converted could not convert, otherwise the world would already be mostly futa, as the conversion tended to turn them into bombshells and it always greatly increased their sex-drive, to the point where none of the converted could continue working. Or, any work that didn't involve sex. It also made them submissive, to the point that certain people kept an eye on her movement for the purpose of 'recruiting' new whores, though those who had been heros were usually picked up by their former enemies and new owners. Either way, unless restrained, they would spend most of their days curled in a ball, mouth on their cock, fingers in their pussy, not bothering Nishi.

Though she usually wore street clothes, as she preferred to fly under the radar, she had a costume, her double D tits were covered with a network of black duralexx (a stronger alloy of spandex), which all rose to the black leather metal studded collar and full face-mask, protecting her identity. A equally black skirt covered a bubble butt and most of the dangling eight inches of soft cock, but not the head of her cock, swinging between smooth, naked legs, which ended in black steel toes boots, without heels, as she was hot, but didn't let that compromise her ability to kick the crap out of people. Her sleek black hair fell to her waist when it was free, but, in costume, it was piled at the back of her head, acting as an impressive helmet.

If she was wearing the costume, then she was already on the hunt. If she was in streets, then maybe they could catch her by surprise.