It was a horrible accident. The TSA officials took you out of the security line at the airport. “What a hassle!” you thought. “Why do I always get picked for these things?” It was supposed to be routine, just a simple X-ray scan to make sure you weren’t carrying any hidden items, but then… the unthinkable. The TSA official scanning you went on break and his replacement didn’t show up. At one point you could hear a couple of guys having casual conversation outside the machine, but no amount of pounding or yelling got their attention. You were stuck in the X-ray machine for six hours. When they finally got you out, they could tell you weren’t hiding anything, but… so could everyone else.
And thus X-Ray Girl was born! Forever cursed to be a complete X-ray out in the world, where everyone can always see right through you. Your super powers, it turns out, are not that cool after all that time. They’re limited to giving off low concentrations of radiation and always being able to tell if a bone is broken, neither of which come in handy that often. Although that one time you stubbed your toe so bad and you were 100% sure it was broken but then you glanced down and saw it obviously wasn’t. But we aren’t going to dwell on the downsides of your permanent radiation scarring. No, instead, let your light shine (figuratively and literally) with this fantastic costume. Don’t hide who you are, you’re X-Ray Girl and you’re damn proud of it! Besides, think of all the compliments you’ll get on your excellent bone structure.