Beings of Light
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The Beings of Light are a mysterious race that travel using the Ship of Lights. Called angels by the primitive people on Kobol, these creatures helped them develop the civilization that would become the Twelve Colonies (War of the Gods).
Apparently mistakes were made in the past by these advanced beings, as they seem reluctant to interfere directly with the Colonials or the Terrans. They help Apollo and battlestar Galactica save the Terrans from themselves (Experiment in Terra).
Angela, who appears in the Galactica 1980 episode, "The Return of Starbuck", wore white, appeared and disappeared suddenly, and spoke in riddles. Although never stated, it seems likely she was another Being of Light. (More than likely since her name literally means "female angel".) She is revealed to be the mother of Doctor Zee, which may account for the young boy's superhuman abilities.