Byelabog
Byelabog: the deity of light, of all goodness and happiness. His name means “white god” and his prime adversary is Chernabog, the black god. Some scholars believe that rather than representing the forces of good and evil, Byelabog may have been the deity of the warm and fertile months of the year, while Chernabog was the ruler of the dark months of winter. Their participation in the battle between light and darkness as good and evil may be a later, Christianized concept.