Spiderwoman

Miles had been a fan of comic books since he was a kid. His favorite was always Spiderman. This didn't diminish into his adulthood. He still loved all the movies, the cartoon series, and (of course) the original comic. It had even influenced his career to be a genetic researcher. After extensive study, he became convinced a radioactive spider could infuse a person with super powers. The theory was mocked by his colleagues, but Miles was determined. He went to the lab late on night (disguising himself in -- what else -- his Spiderman costume from last year's Halloween party) to test the theory on himself. The effects were immediate. He did, in fact, obtain spider powers. The only problem? Only female spiders are able to spin webs, and an unfortunate side effect was becoming a full-fledged woman.