Nachi is a character from Saint Seiya Omega who originally appeared as a Bronze Saint in the original Saint Seiya series, where he wore the Wolf Cloth. By the time of Omega, he has taken on the role of an instructor at the Steel Saint training school, helping to train and command the technologically enhanced Steel Saints. He is one of the veteran Saints who continues to serve Athena in the new generation. In the Pallas Castle arc, Nachi guards the entrance alongside other Saints, using his experience and combat skills to protect the area from Pallasite forces. He wears a Steel Cloth replica that resembles his original Wolf Armor and fights using techniques such as Dead Howling. He is shown to be determined and dedicated, taking pride in the Steel Saints' development and shouting "Perfect!" when he lands a successful attack. Nachi's role in the story is that of a supporting mentor figure, representing the old guard of Saints who guide and support the younger heroes. His development shows him surviving the trials of the original series and continuing to fight in a new era, adapting to new challenges and technologies.