Mihoshi is a member of the prestigious Kuramitsu family, one of the most wealthy and influential families in the universe. Her grandfather is the grand marshal of the Galaxy Police and various other family members serve in equally auspicious roles. Mihoshi herself is a Detective First Class in the Galaxy Police and has a reputation as 'the invincible Mihoshi'. However, apparently at some point in the recent past she suffered some form of mental breakdown or torment that has left her less than she was.
Mihoshi is a screw-up. She first met Tenchi when she accidentally crashlanded her ship into the hot springs he was staying at. She honestly tries her best, but her absent-minded manner and her tendancy to focus on one thing at a time often lead her to cause small to large disasters. It doesn't help that she barely seems to understand the workings of the technology she employs in her job as a Galaxy Police officer.
To her credit, Mihoshi is probably one of the nicest people in the universe. She is kind-hearted and generous to a fault and has a very easy-going nature. Her bubble-headed demeanour means she doesn't seem to take offense at anything and always sees the best in others. Her enthusiasm and good looks are often enough to win over most people who would otherwise be annoyed by her antics.
It is unknown exactly what kind of physical prowess Mihoshi has. While she demonstrates a certain resilience and combat acumen it is unknown how much of this is innate and how much relies on her equipment. She has an arsenal of hyper-tech weapons in the forms of the usual energy blasters, as well as a combat suit that allows her to survive vacuum and fly. She also carries a cube that allows her to store and materialize equipment apparently from subspace or a similar storage medium, and which doubles as a remote control for her space ship. Finally, Mihoshi seems to have a strange kind of luck. Her serendipity often means that she will somehow survive situations she has no earthly right surviving.