Voiced By: Banjo Ginga (JP)
- Badass Normal: Cassios is strong enough to fight Saints if they are not invested fully in the fight, as Shun and Shiryu learn. He wasn't a candidate for the Pegasus armor for nothing.
- The Brute: He has no special techniques, only brute force.
- Dark-Skinned Blond: In the manga.
- Dumb Muscle: Didn't even know about the cosmos when he fought Seiya the first time. Seiya even called him dumb.
- Ear Ache: Got his cut by Seiya on their fight for the Pegasus Cloth.
- Even Evil Has Loved Ones: He truly cared for his Sexy Mentor Shaina.
- Hellish Pupils
- Heroic Sacrifice: Not for Seiya, mind you, but to avoid Shaina the pain of losing the man she love.
- Mauve Shirt
- Monstrosity Equals Weakness: He is stronger than average, but weaker than an actual Saint.
- Muscles Are Meaningless: Because the Cosmos is everything; with him in particular this is very relative, as he is strong enough to kick Shun and Shiryu's asses in order to prevent them from fighting Aiolia, showing that he is more than capable of fighting Saints if they are caught unawares. A normal man would have been shred to pieces by Aiolia and he was still standing when the barrage ended.
- Not Drawn to Scale: He get's pretty big at times during the first episode. When the twelve Houses arc rolled around they found a more realistic height.
- Politically Incorrect Villain: In the beginning, he mocks Seiya to be japanese.
Jaki (Anime Only)
- Ax-Crazy: He love the violence. His cruelty is the reason of his failure as Saint.
- The Brute: Has a enormous strength.
- Dark-Skinned Blond: Has blonde hair and tan skin.
- Disney Villain Death: He dies after falling off a cliff.
- Filler Villain: Anime-only character.
- Good Scars, Evil Scars
- Giant Mook: A former Saint apprentice who failed to achieve his goal.
- Loves the Sound of Screaming
Gigars (Anime Only)
- Brain Washing: What he did to the Crystal Saint.
- Chuck Cunningham Syndrome: When Gigas sees that Ikki has killed the Saint of the Flame, he and the guards who accompanied him sanctuary run away. Since then disappears and does not see him again.
- The Dragon: Gigas was at first the personal adviser to the Pope Arles and who commands and directs the missions of the Saints of Sanctuary of Athena.
- Evil Chancellor: Gigas is the personal adviser to the Pope Arles and who commands and directs the missions of the Saints of Sanctuary of Athena.
- Evil Mentor: To Phaeton.
- Eyepatch of Power: It's actually a freaking diamond.
- Filler Villain: He and Phaeton appear only in the anime.
Ohko (Anime Only)
Voiced By: Kazuhiko Inoue
- Animal Motifs: Tiger.
- Cain and Abel: In the childhood friends sense, to Shiryu.
- Deceptive Disciple: Played straight with he and Libra Dohko. Though Ohko was more of a JerkAss than anything.
- Delinquent: He was quite powerful, but he had a violent temper, breaking the rules and seeking fight with whoever he could.
- Died in Your Arms Tonight: Shiryu's. Before dying, hatred of Demetrios for the one who had prevented him from becoming a saint disappears, and remains the affection for him who for many years had been as a brother.
- Dub Name Change: Demetrios in italian's dub.
- Filler Villain: Appaer in a anime-only episode.
- Red Oni, Blue Oni: Red to Shiryu's blue.
- The Rival: To Shiryu for the Dragon's Cloth.
- Tiger Versus Dragon: Played straight, his animal motifs is a tiger and he fight Shiryu that has a dragon as motifs.
Phaeton (Anime Only)
- Evil Redhead: Has red hair.
- Filler Villain: He and Gigars appaer only in the anime.
- Spell My Name With A B: Also known as Bhaton.
- Smug Snake
- The Unreveal: Is never stated if he is a Saint or not.
- What Happened to the Mouse?: Disappears after the Sanctuary's battle.
- Abusive Parents: In the anime, she was Master Guilty's daughter. In the manga, she was a mere slave girl sold to Guilty's crew.
- Beauty Equals Goodness
- Break the Cutie
- Kill the Cutie: Guilty kill her.
- Florence Nightingale Effect: With Ikki.
- Identical Stranger: A genderflipped and blonde Shun. Lampshaded by Esmeralda and ikki themselves.Esmeralda: What, Ikki? You thought I was your little brother again?Ikki: Ah yeah, sorry about that. You guys look alike so much, except for your hair and eye color...
- Innocent Flower Girl: She loved flowers. A delicate wreath of fresh flowers adorned the cross he had fashioned for her the day she died.
- Evil Mentor's Beautiful daughter : In the anime was Guilty's daughter.
- The Lost Lenore: To Ikki in the Anime.
- The Medic: He cares for Ikki after training sessions by sneaking in the dungeon where he was resting.
- Morality Pet: To Ikki.
- Offing the Offspring: Anime-only.
- Too Good for This Sinful Earth
Voiced By: Rossy Aguirre (Latin America)
- Black Eyes of Evil: Averted, she's not a villain at all.
- Brooding Boy, Gentle Girl: With Orpheus.
- I Want My Beloved to Be Happy: Felt guilty that Orpheus was always sad and won't leave her side after death.
- Starcrossed Lovers: With Orpheus.
- Taken for Granite: She's a literal lump of rock from the shoulders down.
- Break the Cutie: Anime-only, when Crystal went Brainwashed and Crazy and enslaved everyone in the village. Jacob managed to escape and broke down in tears when Hyoga came to help him. He manages to get better, though.
- Cheerful Child
- Innocent Bystander
- Tagalong Kid
- Bratty Half-Pint: He often tends to mock people.
- Distressed Dude: To be fair, he is much younger than the teenaged Saints.
- Facial Markings: The symbol on the forehead.
- Human Subspecies: He's Lemurian.
- Psychic Powers: Has a strong telekinesis power, which he can use on humans, telepathy and even teleportation.
- Tagalong Kid
- Say My Name: MU-SAMA!
Little Helen (Anime Only)
- Break the Cutie: Poor little girl has it rough. Surprisingly, she manages to bounce back and get better.
- Girlish Pigtails: Her hairstyle.
- Heroic By Stander
- The Ingenue
- Innocent Blue Eyes: Has blue eyes.
- Plucky Girl: This is the girl who, after helplessly watching her grandfather's murder at the hands of Shiva and Agora and being thrown alive inside a burning volcano, manages to hold on the burning rock walls and climb her way up, which gives a dying Ikki his Heroic Resolve back..
- Women in Refrigerators Thankfully averted: Shiva and Agora do invoke the trope and try to fridge her with the volcano deal, but she survives.
- What the Hell, Hero?: Tries to deal it to Shiva and Agora. It backfires.
Voiced by: Naoko Watanabe (JP)
- Dub Name Change: "Lamia" in Italian.
- Girlish Pigtails: Her hairstyle.
- Shy Blue-Haired Girl: Has blue hair and is very shy.
- Nice Girl: Is really patient with the children at the orphanage.
- Team Mom: She chose to stay at the orphanage she was raised in and become this to the children there.
- Tsundere: When was young.
- Unlucky Childhood Friend: To Seiya.
- Abusive Parents: And how, considering that the Saints are his biological kids (manga) or his pupils (anime)...
- Kansas City Shuffle: In the manga he changes the appearance of the Sagittarius Cloth on purpose, to the point that the Silver Saints think it is a fake.
- Karma Houdini: Sacrifices his own children, gets to die of old age before any of them could make him bleed for it.
- Really Gets Around: Well, he fathered all those young Saints to different women...
- Screw the Rules, I Have Money!: He holds the Galactic Tournament and reveals the Saints to the world, much to the cringe of Sanctuary. They don't take it well.
- Secret Keeper: He keeps hidden that Saori was the reincarnation of Goddess Athena, who reincarnates in a human being every 100 years.
- The Chess Master: He starts the Graude Foundation and uses it to find his large number of children that, in the future, become the Bonze Saint and Athena's protectors.
- Well-Intentioned Extremist See Abusive Parents. Not that he was happy about it.
Voiced by: Akiko Tsuboi (JP) and Dorothée Jemma (FR)
- Human Popsicle: She died when the ship sinks into the icy sea near Siberia. As the ship sunk in the icy sea, her body remained uncorrupted.
- Missing Mom: To Hyoga. Having the ability to visit her frozen tomb was the real reason who drove Hyoga to became a Saint.
- Posthumous Character: Natassia is a recurrent character in Hyoga's memories, and this was used many times by his enemies, to make him remember the grief he felt when he lost his mother. Except the DiC dub. which case she's...
- Cursed: While trying to protect young Hyoga, an evil sorcerer attacked. She was so weak and alas they were too strong. Now she sleeps in the bottom of the ocean awaiting the day that her beloved son, Hyoga will win the Gold Cloth and use its power to wake her up. Believe it or not, this is the summary that Hyoga gave while using his surfer accent.
Voiced by: Yuriko Yamamoto (Classic Seika), Satsuki Yukino (Non-classic Seika)
- Break the Cutie: After that his brother Seiya was taken away from her.
- Cool Big Sis: To Seiya and Miho.
- Easy Amnesia / Identity Amnesia: She had lost his memory immediately after arriving in Greece, following the footsteps of his brother and falling into a ravine.
- Waif Prophet: What she became with time.
- Anime Chinese Girl
- Damsel in Distress: The major example is when Deathmask, annoyed by her prayers for Shiryu, throws the girl in the waterfall trying to kill her.
- Dub Name Change: "Fior di Loto"(Lothus' Flower) in Italian, probably a literal translation of her name.
- Implied Love Interest: Of Shiryu. They're married in the non-canon work Saint Seiya Omega.
- Plucky Girl: Has her moments, specially in the anime.
- Satellite Love Interest: To Shiryu.
- Shower Scene: The only one in the entire series to feature a girl.
- Supreme Chef
- The Power of Love: Her prayers reached out to Shiryu while he was in the Land of Spirits.
- Battle Butler: He is apparently good at kendo. Not that it does him any good in a show where superpowered boys are the rule.
- Butt Monkey: He always tries to be strong and protect Saori but even the Sanctuary soldiers can defeat him. Is the series' comic relief.
- Characterization Marches On: He starts as a rather flat and downright abusive retairner for the future Saints, later develops as a man who was honor-bound to protect Saori, and ultimately was the series' comic relief.
- Dumb Muscle: He's pretty strong and will fight for Miss Saori even if the odds are stacked against him, but not too smart.
- Good Is Not Nice
- Karma Houdini: The fact that Tatsumi hasn't been tortured to death by the same Saints he abused as children is nothing short of a miracle.
- Kick the Dog: Beats young Ikki pretty bad by tying him upside-down with a kendo stick and kept telling him that his sacrifice of going to Death Queen Island doesn't matter since Shun was going to a worse place.
- The Dog Bites Back: When Ikki comes back six years later with a fiery entrance and makes a vow before the crowd to make him pay for what he's done.
- Jerk Ass: He brutally abused the kids at first, specially Ikki.
- Jerk with a Heart of Gold: But he genuinely cared for Saori, whom he helped raise after Mitsumasa Kido's death.
- My Master, Right or Wrong: Follows Mitsumasa Kido and later Saori Kido through the 100 orphan controversyand when Sanctuary was going after Saori for being a False Athena.
- Oh Crap!: His reaction when he sees Ikki really survived Death Queen Island.
- Secret Keeper: Always knew that Saori was Athena, and kept his mouth shut per Kido's instructions.
- Took a Level in Kindness: He started the series being an abusive jerk, he develops a more likeable personality towards the saints as the series advances.
- Would Hurt a Child