T’emptrisse hails from a distant dimension, on a world called Fornata. Her people, the Sh’arnn, are able to magically tap into the dark energy that drives the expansion of the Universe, using it for combat and defense, among other things. The Sh’arnn are a highly hedonistic and sexually expressive race; having long ago eliminated all physical hardships on their world, they spend their long lives (measured in millennia) seeking to maximize their pleasure.
T’emptrisse is perhaps more guilty of this sin than most of her kind. When the means was discovered to broach the barriers between planes of existence, she jumped at the chance to become a dimensional explorer; frankly, she was bored with what her own world had to offer, and sought new experiences. As she travelled from plane to plane, world to world, she found those experiences… sharing sexual stimulation, if not outright intercourse, with a mind-boggling variety of beings of all shapes and sizes (many not even humanoid). Much of the time, she performed sexual acts in exchange for food, water, and other physical needs. Decades passed, then centuries…and T’emptrisse gradually dropped any pretense of maintaining contact with her homeworld, living a life unfettered by any form of responsibility.
Eventually, her travels brought her to Earth, where she first appeared on the outskirts of Paragon City, her dark-energy power drawing her to a Portal Corp. facility. Needless to say, the researchers were surprised by her appearance… and even more shocked when she walked up to a male lab assistant, wrapped her arms around him, and French-kissed him, before pushing him into a chair and proceeding to tear his clothes off. It took three burly security guards to drag T’emptrisse off the poor man (not that he was complaining at the time!), and then she attempted to molest them as well!
Eventually (after nearly wrecking the place with her dark energy), she calmed down enough to explain herself. It seemed that she had been trapped for many years in the previous dimension on her journey, a dimension that had no corporeal lifeforms for her to copulate with, and she was starved for sexual contact. So, the first humanoid she laid eyes upon after crossing over… well, she simply had to have him. At least, it was that simple in her mind… the authorities saw it differently, attempting to arrest her on charges of lewd behavior, sexual assault, battery, and property damage.
Outraged by the attempt at restraining her, T’emptrisse broke free. Now a wanted criminal, she drifted the streets in the seedier parts of the City for a short time, openly selling her body to obtain whatever she needed… but mostly for sexual gratification. Once she learned of the Etoile Isles’ reputation as a haven for those on the wrong side of the law, she teleported there immediately, and has been there for some time now, offering both her pleasure-making skills and her otherworldly powers to any who are willing to compensate.