Wikipedia
Bai-Ulgan
Bai-Ülgen or Ülgen ( Old Turkic: Bey Ülgen; also spelled Bai-Ulgen, Bai-Ülgen, Bay-Ulgan, Bay-Ulgen, or Bay-Ülgen; Khakas: Ülgen, Cyrillic: Ӱлген, Russian: Ульгень or Ульге́нь, Ottoman: اولگن) is a Turkic and Mongolian creator-deity, usually distinct from Tengri but sometimes identified with him in the same manner as Helios and Apollo. His name is from Old Turkic bay, "rich", and ülgen, "magnificent". Ulgan is believed to be without either beginning or end.