Xanxia

Queen Xanxia was the evil queen of Zanak, she was practically frozen at extreme age in time dams and watched over by the Pirate Captain. At some point she created a hologram of herself, pretending to be the Captain's nurse and persuaded him to continually jump Zanak plundering planets for rare minerals to feed the time dams, with the aim of creating a permanently youthful viable body. She was defeated by the Doctor when Zanak was prevented from materialising around Earth, the time dams and the mountain they were enclosed within were finally destroyed by the Mentiads. (DW:The Pirate Planet)