Alpha Dragon

Alpha Dragon (アルファドラゴン Arufa Doragon) is a race.

Background
The Alpha Dragons are weapons of mass creation born from the Dragon Deity of Creation, Messiah. After Messiah's mind was warped by its master and creator, the demiurge, into turning against Cray i and its fellow creator deities, the Messiah created the six Alpha Dragons. As Messiah is a far better creator than Gyze, the Alpha Dragons are far more stable than the Zeroth Dragons, at the cost of wielding a lower amount of power. The Alpha Dragons embody the powers of the clans of the original Cray.

The Alpha Dragons are capable of warping the spacetime of Cray i, replacing parts of Cray i with the original Cray. The maddened Messiah's mind sees Cray i as a disgusting abomination that should never have existed, a mockery of the perfect beauty of Cray, and thus seeks to erase Cray i completely and replace it with a timeline completely under the control of the demiurge. The Alpha Dragons can retroactively edit Cray i ' s past and future to transform them into the original Cray's past and future, erase individuals belonging to Cray i's clans from existence, and summon armies and groups from clans not on Cray i that exist on the original Cray. Thus, the Alpha Dragons pose an existential threat to Cray i.

While Kairos's Faction and the Interstellaris faction led by Arcturus work to undo the changes in spacetime effected by the Alpha Dragons, the nations of Cray have mobilized against the armies summoned by the Alpha Dragons, uniting under the banner of the Nexus Guardians, the inter-clan alliance of warriors of Cray i. The demiurge, and thus the insane Messiah, see the Nexus Guardians as especially abhorrent, as they believe that clans should stay segregated and in perpetual conflict.

The demiurge knows that while it acts to fight on Cray, due to the system that it created, it can only truly triumph by sending cardfighters to defeat the cardfighters of Earth i, the alternate Earth corresponding to Cray i. Thus the maddened Messiah summoned several cardfighters from the original Earth, including the original Aichi Sendou, Toshiki Kai, Kouji Ibuki, Leon Soryu, and others, and gave them the cards of the six Alpha Dragons. (Chrono Shindou was not present, as he had already entered Earth i to fight against the revived Gyze.) Using their absolute trust in Messiah, the maddened Messiah convinced them to fight against the cardfighters of Cray i, telling them that they were planning to invade the original Cray.

However, this was a flawed plan, as it was likely that both sides would figure out the other side's true intentions quickly and ally to defeat the maddened Messiah. Messiah, in its delusional state, truly believed that telling them about the "threat" posed by Cray i would be enough to convince them to fight against them, not understanding that a regular person wouldn't see anything wrong with Cray i. Thus the demiurge reached out to the minds of Messiah's champions and enacted a stranglehold on them, preventing them from acting to oppose Messiah even as their minds were kept intact. Messiah was kept ignorant of this, as it would not have approved of this due to it valuing people's free will.

Trivia

 * The Alpha Dragons' names are derived from the second half of the name of the nation they represent.
 * Sol's "S" is derived from the "Sanctuary" in "United Sanctuary."