As with many enemies, Omega's appearance throughout the series has varied. Omega most commonly appears as a silver steel robot with a round body and four spider-like legs emerging from the sides. It possesses no head, and the central body is dominated by a large, yellow, pupil-less eye. On other occasions, Omega has simply been a large bio-mechanical entity, silver and blue in coloring, and usually quadrupedal. As mentioned, Omega is the most recurring superboss in the series, often ranking as the most difficult boss in any game in which it appears. It is sometimes related to Ultima Weapon, a weaker version of it, or Shinryu, another recurring superboss. (more...)