The following list comprises the various antagonistic factions that appear in the mangaSaint Seiya and the sequel , written and illustrated by Masami Kurumada. The antagonistic characters appear as various deities from Greek mythology, who rule over the realms that form Earth, and their servants who form part of their armies created to wage war against Athena, the protector of the Earth realm. In addition, several factions aren't presented as soldiers of these armies, but as organizations who pursue their own ends.
Black Saints
The. alternatively spelled as in the anime, appear as servants of the Bronze Saint Phoenix Ikki, on his quest to kill all the Bronze Saints. The Black Saints are former Saints who were stripped from their title and Cloth for using their strength for personal gain, turning to a life of crime and violence. All of them trained in Death Queen Island along with several sons from Mitsumasa Kido, but most of them died. Although there is a Black Saint counterpart for each one of the 88 constellations, Kurumada featured prominently only four in his manga, the dark equivalents of the protagonists: voiced by Shigeru Nakahara, voiced by Kaneto Shiozawa, voiced by Ken Yamaguchi and voiced by Kazumi Tanaka. They were regarded as the most powerful among the Black Saints and were collectively known as The. Their Cloths and techniques are counterparts to the ones from Pegasus Seiya, Dragon Shiryū, Andromeda Shun, and Cygnus Hyōga. Although, there is only one counterpart of each Cloth, in the manga the Black Dragon Saint has a blind brother that helps him to fight. Additionally, there are also several Black Phoenix Saints, who refer to themselves as Ikki's shadows, although in the anime one of them appears as the strongest one. The four Black Saints are defeated by their equivalents, and in the manga, they are later killed by the Silver Saints, who were meant to kill the Bronze Saints, but mistook them due to an illusion created by Aries Mu. Additionally, the Black Four were featured in the anime-inspired printed side story "Nebula Chain – The bond of brothers", in which they were given names, Black Pegasus was known as, Black Swan was called, Black Dragon was named and Black Phoenix was called , leaving Black Andromeda unnamed. ;:
Blue Warriors
The are an order of powerful warriors from the ice lands of Bluegrad, who also draw their strength from their Cosmo. Their order was formed centuries ago by mighty warriors who, in the same way as Athena's Saints, were capable of rending the skies with their fists and splitting the earth with their kicks. The Blue Warriors were led by, prince of Bluegrad, and protected their homeland against any menaces. They were presented by Kurumada in vol.13 of his manga, in the short story arc, he dedicated to Hyōga, "Kōri no Kuni no Natassia Hen". Their only known technique is "Blue Impulse".
In the same way, Athena has Saints, Poseidon has an army that has assisted him since the age of myth, the. With Poseidon's Undersea Temple serving as its base in the, it is formed by hundreds of low-ranking soldiers and commanded by seven powerful warriors known as Generals, whose Cosmo rivals that of a Gold Saint. These Generals don armors called, which are said to be as resilient as the Gold Cloths and are modeled after marine creatures of legend. Their duty is to defend the of the seven oceans that safeguard the Undersea Temple. The strongest pillar, the, is defended by Poseidon himself.
Poseidon's Mariners
The seven most powerful warriors of Poseidon and commander of his army. Endowed with might that equals or surpasses that of a Gold Saint, the Mariner Generals wear the Scale armors, said to be as resilient as the Gold Cloths.
The Underworld Realm
Ability: Teleportation, Telepathy, Spear, Ability to summon lightning.
The Specters
The are the equivalents of Athena's Saints in Hades' Army, of which there are 108: 36 Heavenly Stars and 72 Earthly Stars makes up the 108 stars in total. The proof of their status is found in the armors they wear, called, said to shine as a dark diamond. The leadership of Hades' army is formed by the collective known as the three Magnates of Underworld whose might surpasses those of the Gold Saints. ;Unnamed Specters
The Heavenly Realm
Angels
The are Powerful warriors from the, servants of the Olympic gods, and wearers of the armors. To date, Kurumada has shown them as loyal to the moon goddess Artemis.
The Lunar Realm
The is ruled by the beautiful goddess Artemis, older sister to Athena and younger sister of Apollon. Although Artemis initially shows hostility to Athena, she later offers her assistance. Despite this, Artemis' servants plot secretly to kill Athena and her Saints. Additionally, the Angels, the warriors of the Heavenly Realm, seem to have pledged allegiance to Artemis.
Satellites
The are guardians of the moon and women/soldiers of Artemis. The Satellites are all excellent archer, their armor, recall the legend Japanese of the moon rabbits.
Anime-only antagonists
Some antagonistic factions do not exist in Masami Kurumada's Saint Seiya manga, appearing only in the TV anime adaptation. These include the Ghost Saints, the henchmen of Pope Ares, some Silver Saints and Odin's Asgardians.