Appearance and biology
The Ux were nearly identical to humans other than possessing visible markings on their cheeks.
Culture and society
The Ux had a faith-based society centred around a Creator. In 2018, the Ux believed they encountered the Creator when the Stenza Tzim-Sha was teleported onto the planet via a Stenza recall device that had been corrupted by the Thirteenth Doctor. As they were isolated from the rest of the universe, they believed him to be a god. A shrine was built in honour of the Creator. However, in 5425, they realised that Tzim-Sha had deceived them after the Doctor told them the truth. (TV: The Battle of Ranskoor Av Kolos)