The Ambassadors of the City State of Binding Light are from a species of goblin-like humanoids. They are represented among the many aliens who visited the space station Platform One in the year 5,000,000,000 to witness the destruction of the Earth.
Members of this species are remarkably sensitive to oxygen level of the atmosphere, which needs to be constantly monitored for their benefit. A member of their race (or a very similar one) has also been observed among the various species from the Sun-Singers of Akhet.
- Doctor Who, series 1 - "The End of the World" (2005)