Gold Guardian

The Gold Guardian was one of the Six-Fold Gods of the Six-Fold-Realm and a Guardian Of Time that represented Life. (PROSE: The Quantum Archangel)

Along with his fellows, the Gold Guardian was in attendance for the creation of the universe. (PROSE: The Whoniverse)

Behind the scenes

The idea, echoed in Divided Loyalties, that there were more than two Guardians of Time, that they should be counted among the Great Old Ones, and that they originated as the "upper echelons" of the earlier race of Time Lords who ruled the previous universe, was based on a cosmology outlined by Craig Hinton. Notes explaining his view of the matter were written as part of the preparatory work for The Quantum Archangel, and later printed in the charity anthology Shelf Life. Therein, Hinton explained that in his theory:

The High Council of the Old Time Lords were all linked to the Matrix when the universe ended. They became the Guardians – sentient life forms that acted as the vessels or conduits through which the fundamental essence of the Universe could act.Craig Hinton

However, the Gold Guardian, being the sixth and final Guardian and "the Guardian of Life in Time, the Guardian of Sentience, He Who Walks in Life", was different from his fellows: rather than a Time Lord, he was the reincarnated form of the Matrix itself.