This is Dajbog / Dažbog / Dabog, ancient slavic god of sun, who rides his fiery chariots across the sky every day. His name means "god giver" and stands for "giver of life", which no scientists would deny, sun really is giver of life. One of his manifestations was in shape of wolf. When christians came to slavic lands, they used his wolf shape to demonize him, and made him into devil (lucifer means bringer of light, therefore god of sun). Therefore to christians, giver of life is evil.