Isari

In the Infinity Doctor's reality, the Isari were a race who fought against the Sontarans, who were led by General Sontar, in a war lasting two thousand years. (PROSE: The Infinity Doctors)

During the Ghost Wars, the vampire Garglespike owned a copy of the Isari Revised Dictionary 1978, a technologically-advanced dictionary containing definitions for multiple languages, including English, and a built-in translation matrix. When she wasn't using it, she shrank it down into a book-shaped pin on her lapel using acumancy. (PROSE: The Bloodletters)

Behind the scenes
The Isari originated in gamebooks from FASA's The Doctor Who Role Playing Game.