U
- Ultraworld
- An artificial planet overseen by a group of blue humanoids known as the Ultra. It is later revealed that the whole planet is one gigantic computer. The crew of the Liberator are forced to land on Ultraworld and serve its computer.
- Ursa Prime
- Servalan threatened to send Travis to "the slave pits of Ursa Prime."
Read more about this topic: List Of Blake's 7 Planets