Jagganth Daiki-Nagata

 was the leader of a human military rescue team in the 38th century assigned to investigate why all contact had been lost with Le Verrier space station in orbit of Neptune. When her team encountered the Doctor and Clara on Le Verrier, Nagata instantly assumed that they had something to do with the disappearance of the station’s crew, but with the Doctor’s help she soon discovered that the truth was far more sinister…the crew had been consumed by their own sleep dust! Having taken the Morpheus process for granted whilst on Triton, Nagata was horrified to discover that the pods also evolved human sleep dust over time to become a sentient lifeform in the shape of the Sandmen.

Nagata was instrumental in helping the Doctor to determine that whilst the lumbering Sandmen appeared blind, their visual receptors were being hijacked by the dust, the result of which was that everyone who had used the Morpheus pods was now a spy for the monsters! However, neither she nor the Doctor fully came to understand who was really collating this data and why…

Nagata was ultimately the only one of the Le Verrier crew or rescue team to survive the Morpheus incident. (TV: Sleep No More)