* AntiClimaxBoss: Ionia.
** From episode 95... [[spoiler:Europa and Mira. The latter got 1HKO'ED while the former lost his Chronotector after a single attack and got slain after [[VillainsWantMercy his futile attempt at begging for mercy.]]]]
** Since Ikki never felt Mira was a threat anyway, it was to be expected. However it was a surprise for Europa.
* AssPull: [[spoiler: Paradox having a sister wasn't really hinted at at all in the first season, and actually runs somewhat counter to the back-story they gave her. Depending how charitable you're feeling, this is either her being an UnreliableNarrator or the new writers inserting something they just came up with. Fans of the original series are likely to be more forgiving, though, knowing the "Gemini = Twins" thing.]]
* SugarWiki/AwesomeMusic: The opening is a nice sendback to the original opening, which too was pretty awesome. The song starts off nice and sombre complete with a female singer (Shoko Nakagawa of "[[Manga/FullmetalAlchemist Ray of Light]]" fame, who also voices Saori in this series), then kicks off into a rock off similar to the original, even going as far as bringing the original singer for the song into the song.
** There's also the second opening, Root Five's "Next Generation" (also called "New Ω Myth", though that doesn't seem to be an official title), which, as a rock/techno take on ''Seiya'' themes, manages to trade off a notch of bishonen for a notch of badass while still remaining surprisingly faithful to the concept.
* BrokenBase:
** The change in art style and the spandex looking Armors.
** The change of the Eagle cloth from silver to bronze.
** Kurumada's near-zero involvement with the series.
** [[HeroAcademy Palaestra.]]
** And top of all that, there's the new set of ElementalPowers rules that, depending on your opinon, either gives focus to the mythos or painfully limits the scope of the series.
** Some fans of ''Lost Canvas'' blame Omega for Lost Canvas not getting continued. Which is full on FanDumb because a weekly television series has absolutely no effect on what is an OVA release.
** The second season as a whole. Is it a SurprisinglyImprovedSequel for returning the Cloths back to its classic roots, bringing back the old cast and have them join forces with the new one, or is it a SeasonalRot for swapping out key staff members for relative unknowns and PanderingToTheBase by bringing back the clunky and old-fashioned Cloth Boxes and hindering the CharacterDevelopment of some characters, like Souma and Yuna, in favor of the return of the classic Saints?
* CommonCrossover: With the ''PrettyCure'' franchise, in particular ''Anime/HeartcatchPrettyCure'' (in which its first character designer previously took part) and ''Anime/SmilePrettyCure'' (which was the one airing when it premiered), to the point of spawning a few relatively obscure {{crossover ship}}s.
* ComplainingAboutShowsYouDontWatch: BIG TIME! Some old school fans reach absurd levels of FanDumb, bashing Omega just because of the redesigned cloths and because it's not centered on the old 5 Bronze Saints, even though they never watched a single episode. Go to any Forum or Fanpage and have fun with the idiocy.
* CrazyAwesome: Haruto is slowly rising to this.
* DamselScrappy: Saori.
** Aria is also this to many fans as well.
* EnsembleDarkhorse: Taurus Harbinger for his anti-hero traits as well his long story arc in contrast to previous Taurus Saints whose actions were quite disappointing.
** Libra Genbu is one of the better received Gold Saints [[spoiler:and many were sad when he died.]]
** Titan is also coming across as one of the most developed villains from the franchise and his duel with Seiya made him more popular. Many wished for him to have a happy ending with Pallas, [[spoiler:which he eventually got, WalkingTheEarth with her]].
* FanPreferredCouple: Koga X Yuna is very popular in the fandom due to how much time they spend together and due to the fans' desire to include a romantic relationship in the franchise for the first time. During the Sanctuary Arc, fans became happy with the focus on Yuna who was often worried about Koga's mental state. This was even better when Yuna stops Koga from his own darkness by awakening her Seventh Sense.
* FashionVictimVillain: Abzu [[spoiler:after being removed from Koga]]. His armor is an asymmetric amalgamation of animal heads, black armor, [[SpikesOfVillainy spikes]], and much, much more. Considering that he's a primordial god who birthed life, it's kind of justified.
** Europa, who's designers were aparently intent on creating a character that looked like a [[http://static2.wikia.nocookie.net/__cb20130511220645/saintseiya/es/images/8/8b/Seteibodyeuropa.jpg colorful, asymmetric clown.]]
* FoeYay: A small but increasing amount between Souma and Sonia, [[spoiler:especially after he sees how she ''really'' killed his father]].
** From season 2 we have Pallas' obsession with Koga.
* FridgeBrilliance: Ever wondered why there is a dark Pegasus Cloth Stone with a regular one when going to commercials? It's a sign of Kouga's use of light and dark cosmo. Epic foreshadowing since episode 1.
** FridgeBrilliance meets ParentalBonus: Shiryuu seems to be a happier man after the Mars chapter. While it can be said that he's just happy that his son is safe and the Dark Cosmo infecting him is gone, one can also suspect that he's happy because he finally can do it again with Shunrei.
* GrowingTheBeard: Despite the DownerBeginning, the show's first episodes are relatively light-hearted as they focus on Koga meeting the other main characters and learning how to use his Cosmos. It is when Koga is beaten up by the Director, Mars returns and the main characters start running for their lives that the show starts showing its true colors.
* HarsherInHindsight: [[spoiler: The [[FaceHeelTurn Director's betrayal]] seems harsher if you remember Capricorn Saints are said to be the most loyals to Athena... Oops]].
** Only in the anime. In the manga, no such thing is ever stated [[spoiler:and Shura is a traitor being damn well aware of it and taking pleasure from having killed Aiolos]].
* HilariousInHindsight: [[spoiler: Haruto's design and personality seem to aim towards a certain quincy from a [[Manga/{{Bleach}} certain series]] which coincidentally was inspired by ''Manga/SaintSeiya'']].
* IKnewIt: Several fans already predicted Eden's role in the second season during its premiere. It also helped that the opening basically showed people Eden's side.
** [[spoiler:Shiryu using the Libra Cloth was shown in #77 preview. Many fans knew it would show up after he gave Dragon Cloth to his son and Genbu died]].
* IronWoobie: Eden. He's the only member of the main cast to have entered the series [[spoiler: with all of his loved ones alive and well.]] Sadly, this doesn't last. [[spoiler: First, his father murders Aria, the girl he loved, before his very eyes. His half-sister, whom he truly cared for and admired, dies after losing control of the Scorpio Gold Cloth. His father dies the instant that Eden finally convinces him of his wrongdoings. His mother is killed right before his eyes when she sacrifices herself in order to keep Abzu's attack from killing him. He pretty much loses everyone he ever cared about in the span of twenty-four hours.]] He only really looses his composure once, though.
* ItWasHisSled: Subaru's identity. The openings don't even try to hide it.
* LikeYouWouldReallyDoIt: Killing a returning character? Seriously? Would Toei really do what Kurumada wouldn't?
* MemeticMolester: Gemini Paradox. That is all.
** And now, Pisces Amor.
* MoralEventHorizon: [[spoiler:Medea]] has committed or been responsible for a great number of evil deeds. However, our first real taste of how deep the rabbit hole went was when [[spoiler:she callously sacrificed her LoveMartyr stepdaughter Sonia, sending her out with a Gold Cloth she could barely handle to die in battle and slightly slow down the advancing Bronze Saints]].
* {{Narm}}: Mars (the god)'s EvilPlan in episode 29 to [[spoiler: move Mars (the planet) between Earh and the Sun and thus blot out the Earth's sunlight]] puts one in mind of [[WesternAnimation/LooneyTunes a certain other Martian]]: "It obstructs our view of Venus!"
** About 22 minutes into episode 34, Koga [[spoiler: is unleashing his dark Cosmo]] and lets out an angry yell. However, this yell is so brief, random, and abrupt that it can incite laughter rather than a feeling of suspense.
** The whole episode about the TenMinuteRetirement of Haruto to become a rock star was intended to be something very serious and dramatic, but some viewers found it to be unintentionally amusing. There is also the scene which shows why Haruto decides to become a singer after [[spoiler:listening a song in the radio (Which is the new opening of the series.) What makes the scene so bizarre is that he was listening rock music in the radio seated next to the grave of his friend(and previous Wolf Saint) Yoshitomi.]] Haruto announces his TenMinuteRetirement to become a singer with this magnificent line:
---> '''Haruto:''' I am no longer a servant of Athena. I am a servant of ''rock''!
** The way everyone pronounces Saturn, which sounds like Sataaaun, in a clear attempt to avoid sounding like Satan, which is pronounced very similarly to Saturn in Japanese.
* NeverLiveItDown: Silver Saints are still being used as nothing but CannonFodder.
* NightmareFuel: The ending of episode 25. The results of opening that door were creepy as hell.
** It would be quicker to list the aspects of [[{{Yandere}} Gemini Paradox]]' character that is ''not'' some kind of NightmareFuel. If her gender and Ryuuhou is swapped, she would come off as an extremely disturbing and disgusting man.
*** Case and point: Pisces Amor, the most powerful of all Gold Saints by a mile [[spoiler:and Medea's brother]], has an infatuation with Yuna. While not quite played to Yandere levels, his persistent advances (to the point of willingly forcing her sit next to him using his powers) still come off as quite unsettling.
** Fudou is one distubing saint. His palace was very unsetling with that magma that drains life energy but that's not all. When he dons his cloth and lauches his attack, NightmareFace kicks in and boy is it creepy.
** Abzu himself and Koga tapping into his Darkness element from #49 - 50.
* NoProblemWithLicensedGames: Goddamn, ''Saint Seiya Omega: Ultimate Cosmo'' is just good. [[AnimationBump For starters, all the animated cutscenes are significantly better animated than the anime itself]]. [[spoiler:Also, the Triton Scale that all the player characters get to wear at a certain point.]]
* PanderingToTheBase: The redesigns from season 2 and return of all the classic heroes seem to aim at this.
* RescuedFromTheScrappyHeap: Tatsumi was hated by most of the fandom during the original series for his scenes involving beating underages going as far as to whipping Ikki and [[KarmaHoudini never got punished for it.]] Now, in ''Omega'' he is much of a PluckyComicRelief and at the same time OlderAndWiser. Unlike Seiya, Koga considers him an important person comparing him with a relative. This was proved in the third season's beginning when he defended Koga from an enemy.
** While not a notable scrappy, Seiya was the least popular Bronze Saint from the original manga. Some fans didn't like his hot heated personality, [[PlotArmor how much damage he can take]]. In ''Omega'' Seiya is instead characterized as OlderAndWiser acting as TheMentor without stealing the credit. He was so popular he made it first to the Toei popularity poll from the series. His BigDamnHeroes moments probably helped.
** Saori/Athena is infamous for being a DamselScrappy. While the early episodes didn't help to deny this, late season 1 shows a scene where she manages to hold a meteor falling to Earth. While that moment lasted shortly, in season 2 she actually goes with the Saints to enemy's place in order to confront her sister. The fact that she manages to fight against Pallas with her Gold Cloth and winning all alone made the episode noteworthy.
** Subaru was apparently created to be a scrappy as he was a ButtMonkey and talked a lot. However, he got several episodes that developed his character alongside the other Steel Saints which made the character more appealing.
** Arguably, the very concept of Steel Saints. While this particular class of Saints was absolutely hated in the classic series due to being created for the anime, causing them to appear awkwardly in scenes they weren't meant to be in, clearly existing only to sell toys, and then they disappeared mysteriously; in Omega they are shown to serve as the CannonFodder of Athena's troops, they hardly take any spotlight as they exist to get shot down, and whenever a Steel Saint is focused on (Ema, Keri), they're well-written and likable. Not being constrained by being a manga adaptation allowed far greater use of this concept.
* TheScrappy:
** The revelation that season 2 (or at least the manga of the same) will include [[spoiler:a Steel Saint]]. General reaction among the fandom can be summed up as "Who let THEM back into the show?"
*** Said character has already reached [[TheScrappy Scrappydom]] all on his own within seconds of his introduction due to being a JerkAss SmallNameBigEgo who pretty much just serves as CannonFodder in his first actual fight. In fact, he's not only a Scrappy in the sense of being someone whom most of the fanbase dislikes - his whole personality puts one in mind of Scrappy Doo.
** Saori, as usual, and for the same reason as always: serving for virtually nothing else than being a DistressedDamsel who needs to be rescued from the clutches of the BigBad.
*** So far the "she's the true leader and source of the power needed to deal the killing blow to the BigBad" subversion hasn't come around yet like it did several times in the original series. Largely because ''Omega''[='=]s first conflict isn't even over yet and she started that like some of her original Bronzes did--with a viral case of cosmo-crippling darkness.
*** [[spoiler:Considering the fact that Saori and Aria's gift of light (both literally and figuratively) means [[ThePowerOfLove Koga tends to get a massive psychic power boost from just remembering them]], maybe people ought to rethink the uselessness of Athena…]]
* SpotlightStealingSquad: In Season 2 with Saints and other characters from the older generation having more of the focus than the Omega characters.
** On the other hand, this is also BrokenBase. Many who appreciated their return believe they are being wasted as character, while some of those who liked the new characters feel the former's comeback stole the focus from the latter.
* SubliminalAdvertising: How? Inserting [[http://i.imgur.com/QcIjT.jpg pegasus-like]] clothes in main character in a [[Anime/BattleSpiritsSwordEyes Card-Game anime]] and a [[http://i.imgur.com/csQPF.jpg pegasus power-up]] in a [[Anime/SmilePrettyCure magical girls anime]] IN THE SAME CHANNEL AND [[http://i.imgur.com/s38Vj.png SAME DAY]]!
* SuspiciouslySimilarSong: Appropriately, Mars' {{Leitmotif}} resembles [[http://www.youtube.com/watch?v=L0bcRCCg01I "Mars"]] from GustavHolst's ''The Planets''.
* TakeThatScrappy: Two minutes after his return in the series' second season Haruto beats up newcomer Subaru.
* TheyJustDidntCare: Episode 86 is full of animation issues that are very easy to spot.
* TheyWastedAPerfectlyGoodCharacter: They could have shown Aria developing into a successor for Saori, paralelling Koga's development as Seiya's successor. Instead, [[spoiler: she gets StuffedIntoTheFridge halfway through the first season.]]
* TooCoolToLive: [[spoiler:Ionia, Mycenae and Amor.]]
** In the second season, [[spoiler:Libra Genbu and Equulus Celeris.]]
* VillainSue: Pisces Amor, who [[spoiler:is able to eliminate without trouble another Gold Saint (Leo Mycenae) on his first apparition.]] In fact, he was so powerful that [[spoiler: only the PhysicalGod [[BiggerBad Abzu]] was able to defeat him.]]
* VisualEffectsOfAwesome: The second season's finale features Koga and Abzu in one of the most mindblowing fights scene the franchise ever saw. This writer got TengenToppaGurrenLagann vibes when Kouga had no colors.
* WhatAnIdiot: [[spoiler: Souma. Or at least his decision to go after Sonia alone with no leads on her location at all. When it would be easier for him to stick with the group and wait for her to attempt to capture Aria again or appear at another Cosmo Core which she wants to protect.]]
** [[spoiler: The whole group deserves mention here. Sure, let them split up the party, leaving only two Bronze Saints to protect the girl they're supposed to be escorting, while the whole army of Mars is tracking them down to take her back. [[WhatCouldPossiblyGoWrong What could possibly go wrong]]? [[IdiotBall One episode later, they lose her]].]]
*** [[spoiler: I think Kouga and Yuna are exempt from this one. Well, Kouga has a different set of idiot moments.]]
* WhatDoYouMeanItsNotPolitical: One can't help but see Yuna as a character with strong feminist bent, with her defying the traditions for female saints to wear masks. The same defiance can also be seen as a TakeThat against certain religions with similarly imposing decency law.
* WinBACKTheCrowd: Or to be more specific win back the BrokenBase. People who nitpicked the series just based on the Cloths started becoming nicer with the second season's new designs.
* TheWoobie: As per tradition of the series, it has a lot.