Aquarius Mystoria

Aquarius Mystoria (水瓶座アクエリアスのミストリア, Akueriasu no Misutoria?) was the Aquarius Gold Saint of the 18th century in Saint Seiya: Next Dimension, predecessor of Aquarius Camus. Mystoria is indicated as being one of most noble men in Athena’s Sanctuary.

Cygnus Hyoga first encountered Mystoria in the Aquarius temple after crossing the space-time passage created by Chronos, the god of time. Hyoga explained to the gold saint that he came from the future to protect Athena, but Mystoria did not believe his story and froze him.

Virgo Shijima then arrived with Athena - now a small child due to the Poison of Samael - at the Aquarius temple. Weakened by Pisces’ Royal Demon Rose, Shijima implored Mystoria to deliver Athena to the Ophiuchus temple. Hyoga then freed himself from his frozen status determined to take and protect Athena, but Mystoria refused to hand her over.

Hyoga and Mystoria both fight using the ultimate Aquarius attack, Aurora Execution. Mystoria won but only because Hyoga did not have the heart to land the killing blow, thus passing out. Impressed by his courage and skill, Mystoria told an unconscious Hyoga that he would have won if he used his full power. As Mystoria is reluctantly set to kill Hyoga, snakes appeared in the temple, surrounding him and the unconscious Shijima and Athena. He destroys the snakes and was reminded of Shijima's request to him to protect Athena.

Mystoria then awakened Hyoga and entrusted Athena to him; telling him to head to the Ophiuchus temple. He then warned Hyoga that Capicorn Izo would not let him through if he were to fight half-heartedly.

Techniques

 * Aurora Execution(オーロラ・エクスキューション, Ōrora Ekusukyūshon): With arms joined at the head formed as a pitcher, a powerful jet of freezing energy with the appearance of an aurora emanates from the beak. The attack can freeze at the atomic level everything it hits at a temperature close to absolute zero. It is the most powerful Aquarius technique.
 * Kholodnyi Smerch (ホーロドニー・スメルチ, Hōrodonī Sumeruchi): Mystoria hits the opponent with a powerful vortex of freezing air. Cygnus Hyoga also uses this technique.