Lords of Althrace
Needs to be made clear and sourced. Higher Evolutionary links here so I don't think its fanon.
These problems might be so great that the article's factual accuracy has been compromised. Talk about it here or check the revision history or Manual of Style for more information.
The Lords of Althrace were considered to be fellow "Higher Evolutionaries" by the Matrix Lords of Gallifrey. They were alerted to Melanicus' escape by Rassilon, and sent Dakon Theka and the Thane of Kordar (right of picture) as their representatives to the council that was called to discuss ending his menace. Later they co-ordinated the stopping of time using the combined mental exertions of all the High Evolutionaries, which allowed the Doctor and his companions to locate the stolen Event Synthesizer and defeat Melanicus.
Althrace was a system of planets inhabited by a number of species. They were so advanced that they had "bolted" their worlds together. Althrace was located next to a white hole, a natural force for creation, and the beings from the system had gained much wisdom and knowledge from this. They used bio-mechanical technology, and their entire system, planets and inhabitants all, had entered a symbiotic relationship, becoming a "single vast, thinking, feeling, intelligent being."