Classicly

The story of Vanguard too has been told. He was renamed Yellow Light by his taunting playmates, because of imperfections in his central core. Physically disabled by his long stay in the seventeenth band, he was never to know happiness. Oldster, in his compassion and wisdom, led Vanguard to mate—to create and thus to die—for he knew Vanguard's true greatness, that he was destined to father a new race who would supplant the old.

And this is the last story of the Darkness, the story of the purple light named Devil Star.