Tau-Ursa

Tau-Ursa is a rocky planet inhabited by mechanical life forms. Tau-Ursans are a peaceful race, who don't want anything to do with the Transformers and their war. Instead they prefer to live in their majestic technological cities. Tau-Ursans eschew the humanoid form in favor of using tracks, wheels or even hovering for mobility.

Fiction

Transformers in 3-D

A beacon containing a warning about the Destructons crashlanded on Tau-Ursa not long after their release, only to be dismissed as junk by Monitorus, mayor of the city. The Decepticons were lured to the planet by news of Monitorus's latest invention, the Intergon Device, which Galvatron intended to turn into the "Nullification Cannon", and the city was razed to the ground. The Tau-Ursans themselves were spared, allowing Monitorus to alert the Autobots of the destruction and the theft of the device.

Hot Rod and Blurr were sent to check Tau-Ursa for Decepticons. They quickly found Apeface, who had stumbled on the beacon. After a brief struggle, the pair retrieved the data tape from the Decepticon and returned with it to Cybertron, where they discovered the message it contained from the Logicons. The War Against the Destructons, Chapter 1 of 3

Animated cartoon continuity

Tau-Ursa was a robotic planet owned by the Vestial Imperium. The AllSpark Almanac II

Ask Vector Prime

Swindle, Swindle and Swindle had a 200 carat Lysken crystal once owned by Princess Perfectina of Tau-Ursa for sale. Ask Vector Prime