From The TV IV

Dr. Zee was a super genius child who led the Rag Tag Fleet to Earth in the years after the events of Battlestar Galactica . Not much is known about him, except for some clues to his origin were given in the final episode “The Return of Starbuck” which suggests that he may be the child of one of the “Beings of Light”, the angel like aliens from the TOS episode “War of the Gods”.