Sekhmet

 was an Osirian.

She became entombed in a trisilicate spaceship which landed on Peladon and was also bound by a blood lock, requiring the blood of female royalty. Thousands of years later, a miner broke into the chamber in which she was trapped. Over time she broke the locks, killing Queen Elspera of Peladon, Princess Alixlyr of Mars and Princess Pandora of Earth. She broke the last lock with Erimem's blood, but Erimem had poisoned herself with mandrake. Before Sekhmet could take her dying revenge on those around her, Alixlyr's twin brother, Prince Zixlyr, distracted her by grabbing her still inert form. He activated a xanthoid volatiser and told the other people there to run. A minute later, the Volatiser vaporised Sekhmet and Zixlyr. (AUDIO: The Bride of Peladon)