Utnapishtim

Utnapishtim was an inhabitant of Anu. He carried out Qataka's execution, but became convinced that she somehow survived, and had a city-sized space ark constructed to save what he could of his world. Thus, he and his followers survived when Qataka destroyed Anu with a cobalt bomb. They pursued her to the Sol system and battled her, thinking her dead when her ship was destroyed. The ark was damaged in the flight and forced to land on Earth, in the Mashu mountains, far from the human habitations in Mesopotamia.

The traveling singer Avram found the entrance to the city-ship and learned the story of Utnapishtim and Ishtar, which he interpreted as a war between the gods which resulted in a devastating great flood. Avram later led Ace and Gilgamesh to Utnapishtim, where Ace informed him of Qataka's survival as Ishtar. Utnapishtim then helped Ace and the Seventh Doctor defeat her, uploading a computer virus into her cybernetic body and destroying it.

The Doctor gave Ishtar's technology to Utnapishtim, thus allowing him to repair his ship and leave Earth. He and his people colonized an uninhabited planet, and their descendants were contacted by an Earth expedition in the 32nd century. (NA: Timewyrm: Genesys)