Angel, those who blossomed their spiritual power into "transcendental power". Guardian, those who blossomed their spiritual power into "absolute power".
People who possessed both characteristics started to appear in the White World after the "Gambiel War" which threw the White World into unprecedented crisis. They are called "Radiant Saint" after the "Ten Radiant Saints"—a group of promising people with both outstanding talents and distinguished war service in the previous war.
They are characterized by weapons and armor made of spiritual power (spiritual arms) similar to the Guardian, and wings composed of light particles. Since they are different from the Angel, they didn't manifest a halo above their heads, and the size of their spiritual arms isn't gigantic like the Guardian. Whether they are a subspecies of the Angel or the Guardian, or should be categorized as a new Tribe, has caused debates among the experts.
Members[]
All "Ten Radiant Saints" are technically counted as part of this group (and also being their namesake), but are treated as separate groups in the story, and not all of them possessed dual Tribes.