The Whale Cloth (or Cetus Cloth in the anime) is the cloth of the Saint Moses in Saint Seiya, Menkar in Saint Seiya : Omega and an unknown Saint in Saint Seiya: The Lost Canvas.
Cetus is a constellation. Its name refers to Cetus, a sea monster in Greek mythology, although it is often called ‘the whale’ today. Cetus is located in the region of the sky that contains other water-related constellations such as Aquarius, Pisces, and Eridanus.
The Cetus Cloth is based on the constellation of the same name. It is based on the Greek sea monster, Cetus, which is shown in later depictions as an enormous whale. It was sent by the god Poseidon to attack the kingdom of Ethiopia, a punishment on the region due to their queen, Cassiopeia, bragging of her beauty surpassing that of the Nereids. This proved a grave mistake, as one of the Nereids, Amphitrite, was Poseidon’s wife and queen. Cassiopeia’s husband, King Cepheus, asked an oracle what could be done to stop Cetus. As a reply, Poseidon demaned the life of Cepheus’s daughter, Andromeda, who was to be sacrificed to him, eaten by the monster.
Without any other option, Cepheus and Cassiopeia did as the oracle instructed but, luckily, the hero Perseus, returning from killing the gorgon Medusa, saw Andromeda and offered to save her if the royal couple would allow him to marry the princess, whom Perseus fell in love with. Her parents easily agreed, and, when Cetus arrived, Perseus held the head of Medusa before the creature, causing it to turn to solid stone at the sight.
Whale Menkar is the Silver Saint in the constellation Cetus in Saint Seiya Omega. Menkar can use the element of Water.
When the group formed by Koga , Soma, Shaina and Yuna come into place in the Thunder Ruins, Menkar attacks them from above trying to crush them with his power. Souma and Yuna planted him face to Koga and Shaina can move on, being defeated shortly after Shaina destroy the Thunder Ruins core with the help of Aria.
The Whale Saint appears alone with Shion and Dohko, and is a survivor of the battle in the village of Tenma against the army of Hades.
He returns to the Sanctuary with the other Saints.
Moses was sent to Japan in a group consisting of Eagle Marin, Hound Asterion, Centaurus Babel and Lizard Misty, to execute the Bronze Saints. After Misty tried to bury the Bronze Saints in an avalanche on Mount Fuji, they each chased after a Saint. but due to the intervention of Aries Mu they chased after and killed the Black Saints instead. Believing they were the Bronze Saints, they were buried and the Silver Saints left for Sanctuary. But as both Misty and later Babel didn’t come after them, they suspected something had happened and returned to Japan. There they found their comrades lying dead on the same beach they thought they had buried the Bronze Saints.
Asterion immediately turned to Marin, since she were the one who was supposed to kill Pegasus Seiya. The Eagle saint didn’t say anything, so Asterion used his Telepathic powers and read her mind, thus he found out the whole story. While Mozes started attacking her, Asterion read her mind and directed his moves. In a short while they had outnumbered her, and tied her upside down to a pole out i nthe sea. They were hoping to attract the Pegasus Saint this way, which it did. They started their battle with the same combination as with Marin, and when it seemed like they were winning the tides changed. Asterion, having claimed that Marin might be Seiya’s sister, had now ignited Seiya’s cosmo. The Pegasus Saint sprouted what seemed like wings, and defeated Moses in a short time.
In the Hades arc adaptation in the Anime, Moses had been resurrected by Hades and went with Misty and Babel to Siberia were Hyoga was. They tried to defeat him but was easily overpowerd by Hyoga’s chilly ice. Yet as they lay there dying among the ice, they entrusted Athena to his care.
Although Moses’ resurrection is clearly depicted in the anime as a minor addition to the manga plot, Kurumada only hinted it in his manga, with the opened tombs of deceased Silver Saints