Place of origin:
Appearance and biology
The Ux were nearly identical to humans other than possessing visible markings on their cheeks.
They had a lifespan of thousands of years. Although Andinio appeared more elderly than Delph in 2018, by 5425, their appearances remained unchanged without any signs of ageing in the years between.
The Ux had the power of telepathic dimensional engineering. Their eyes glowed a yellow colour when their abilities were activated.
As a duo-species, only two Ux ever existed at the same time. (The Battle of Ranskoor Av Kolos)
Culture and society
The Ux had a faith-based society centred around a Creator. In 2018, the Ux believed they encountered by 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. (The Battle of Ranskoor Av Kolos)
Andinio was an elder member of the Ux. On the planet of Ranskoor Av Kolos she brought young Delph to a lake to test his earth moving powers. However, before he could complete this task Tim Shaw appeared, from nowhere, behind them. Andito believed Tim Shaw to be a great creator whose views and instructions must be honoured and respected. (The Battle of Ranskoor Av Kolos)
Delph was a younger member of the Ux. On the planet Ranskoor Av Kolos he was brought by Andinio, his teacher and guardian, to a lake. There his earth moving abilities were tested. However before he could complete this task Tim Shaw appeared, from nowhere, behind them. Andinio believed Tim Shaw to be their Creator, but Delph was not sure.
Regardless, Adinio forced him to comply with Tim Shaw’s requests to build him weapons; as this went against everything Andinio taught him about their Creator, Delph tried several times to get her to see she was deluded, but failed. Ultimately, he was forcibly integrated into Tim Shaw’s temple and used to shrink and teleport planets that defied the Stenza to the temple as trophies.
Luckily, Team TARDIS arrived and forced Adinio to see she had been lying to herself. The Thirteenth Doctor made them realize that there was never a “creator” besides themselves. Delph helped Adiniio return all the planets, deciding it was best for them to see the rest of the universe. This way they could learn more about the people living in it and to never mistake a horrible monster like Tim Shaw for a god again. (The Battle of Ranskoor Av Kolos)