Omega is the last letter in the Greek alphabet (upper case (Ω) or lower case (ω) letter).
"Omega" is used in many areas and fields, such as mathematics, physics, military and astronomy, to name a few. In astronomy, Omega Centauri is a globular cluster in the constellation of Centaurus. In Dragon Blaze, Omega is a sacred Dragon Buster equipped with the "Golden Armor". He wields the "Hammer of Judgment" and the "Shield of Goddess".