The Kingdom of Altar represents the altarians, (they win the elemental war of magic in GC2 lore and go on to rule the planet), the third race the Drath are also in GC2 having been driven of there planet by the alterians.
The Mithra or something like that was broken into fragments and may be the elemental crystals, also the reason there is magic (dark energy in /gc2 research tree) available to the races on Altar.
