History Characters / TheMarvelousMateoMandelson

* PlotIrrelevantVillain: He has no real role to play in the story proper, serving as a ''very'' minor inconvenience to Cassius and Perseus, who dispose of him pretty quickly.
* LoneWolfBoss: The only Sigil Holder to never meet Mateo, have no affiliation with Spectrum, or have no obsession with [[spoiler:Andromeda]].
* StupidEvil: He makes increasingly foolish decisions, with his decision to fight both Cassius and Perseus at the same time being so incredibly dumb that in ultimately results in his death.

* AloofAlly: He isn't in the story often and isn't really involved in the machinations of Spectrum.

* FlatCharacter: Making [[spoiler:Killian his herald]] is all he really does in the story proper, and he never gets into a fight, causing [[spoiler:Killian]] to be the only way readers can read about the Blue Gear in action.
* GenericGuy: It's to the point where his name, compared to those of his comrades, is actually a name that a person in the real world would have.
* HiddenDepths: It can be argued that he's barely in the story and gave [[spoiler:Killian]] the Blue Gear and did nothing to stop Killian from killing him with it, is because he just got tired of being a monster and wanted someone to just do him in. Considering he tells [[spoiler:Killian]] "well done" and dies with a smile on his face, this may actually be the case.
* KilledOffForReal: [[spoiler:Killian's]] first act with the Blue Gear is conjuring a gear and slicing Marcus's neck open with it. Considering Marcus laughs about it and dies with a smile on his face, it's likely that's what he wanted.

* ReplacementGoldfish: [[spoiler:He starts seeing V as this after Molly dies. V does ''not'' take this well.]]

* UnskilledButStrong: There isn't really much to Mateo's fighting style besides using his sigil powers to overwhelm his opponents, and (later on) occasionally ripping out someone's throat or eyeball to make a quick kill on a weak enemy, or disorient an enemy that could somehow survive it. That said, his Red Star is an ''incredibly'' strong sigil, and he's trained enough to be physically strong to a point where a simple punch from him can and ''will'' hurt.

* AxeCrazy: Averted. [[spoiler:Despite using his sigil's power just as much as Cassius has used his, Perseus has managed to avoid becoming a madman like his former friend.]]

* {{Jerkass}}: She was this long before she got branded. One of the last things she said to Oliver (when they were still in school) was this:
--> '''Dieta:''' You're the one who needs to get a grip, arsehole! If you don't like the way I talk about you, then just plug your ears. Is your self-esteem that damn low? If so, you're more pathetic than I thought. But hey, if you want to continue getting bent out of shape over what I say about you, that's fine with me. And do you know why, "Ollie"?
--> '''Oliver:''' W-Why?
--> '''Dieta:''' Because at the end of your day, you mean fucking ''nothing'' to me. And the only reason you're here pissing and shitting your pants is because you've got ''nothing'' going on in your pathetic little life! Now, if you'll excuse me, I've got a class to get to. I'd tell you to have a good one, but I don't really care.

* AlwaysSomeoneBetter: Stronger than the Four Prisms (Awakened Aldrich, Unleashed Wilkins, Omega Cassius, Cetus) combined.

* BigBad: She's the ultimate villain of ''The Marvelous Mateo Mandelson'', being the one responsible for all the story's conflict through her sigils. However, she's sleeping in her own realm for a good deal of the story, leaving Cassius, Longinus, and Murdoch too drive the plot in her place. She's only able to be directly involved in the last fifteen chapters, after she's purged from Melissa's body and forced to face Mateo and company in her true form.

The president and CEO of Roca Industries, a mining company that's actually a front for his real business: Gaia, a criminal organization specializing in weapons manufactory, which is failing due to other criminal organizations oversaturating the market. He's embittered because of this, and has decided to even the odds by hunting down and killing off his competitors. His Sigil, the Brown Rock, grants him the power to control rocks and turn his body into rock.

* FreudianExcuse: She's the way she is due to the [[racism she had to deal with at work HalfBreedDiscrimination]].

* NobodyToNightmare: Downplayed. She's nowhere near as formidable as Longinus or Aldrich, but she's still far more dangerous as a Sigil Holder than she was as a powerless mailroom clerk.

A headstrong diva who was Longinus's protégé when she was aligned with Spectrum, but defected from the group after getting horribly mistreated.

His sigil is the Navy-Blue Thorn, which grants him the ability to fire thorns of any size from his body.

[[folder:Rocardo Rocavich]]
The president and CEO of Roca Industries, a mining company that's actually a front for his real business: Gaia, a criminal organization specializing in weapons manufactory, which is failing due to other criminal organizations oversaturating the market. He's embittered because of this, and has decided to even the odds by hunting down and killing off his competitors. His Sigil, the Brown Rock, grants him the power to control rocks and turn his body into rock.

* BigBad: She's the one responsible for the abundance of insane, superpowered people wreaking havoc in the world, and as a result becomes the final obstacle for Mateo and his family as vanquishing her is paramount to ending the hell the sigils created.
* BigBadEnsemble: With her "husband", Cetus. They're the most formidable threats to Mateo and his team, being the ones who've been calling the shots the entire time. Andromeda turns out to be worse than Cetus, however, and once the former kills the latter by depowering him, Andromeda becomes the last (and most powerful) obstacle.

The "husband" of Cetus, the mother of the twenty-six Letters, and ''the'' BigBad of ''The Marvelous Mateo Mandelson''. She's a godlike entity of unknown origin who created the sigils after discovering she could reverse engineer the elements of Earth with her psychic abilities.

A group of six Sigil Holders who were once well-loved heroes who used their powers for good but have long since been corrupted by those very powers, and have devolved into bloodthirsty criminals, and turned their group of six into a full-blown criminal organization almost all the world's Sigil Holders work for. [[spoiler:When they were still heroes, Cassius was part of this group, but was mistreated by Longinus for his poor grasp of the Red Star, causing him to defect from the group and form Nocturne]]. This group replaces Nocturne as the primary antagonist force of the story after [[spoiler:Cassius gets Mateo's half of the Red Star and abandons Nocturne, giving Spectrum the chance to obliterate the once fearsome organization and take center stage]].

* EvilerThanThou: With or without Cassius, Nocturne didn't stand a single chance against them.

* BewareTheSillyOnes: He's even goofier than Cassius, but is still a powerful Sigil Holder who can absolutely nightmarish if he wants to.

* {Expy}: Of [[Literature/ASeriesOfUnfortunateEvents Sunny Baudelaire]], being a young, giddy girl who likes cooking and sports a mouth full of razor-sharp teeth.

* GenericGuy: To the point where his name, compared to those of his comrades, is actually a name that a person in the real world would have.

* Of [[Literature/ASeriesOfUnfortunateEvents Sunny Baudelaire]], being a young, giddy girl who likes cooking and sports a mouth full of razor-sharp teeth.

His sigil is the Blue Gear, which grants him the ability to conjure gears of any size.

The titular character and main protagonist, Mateo Mandelson's a schoolboy who gets put on the path to fight against Nocturne and the Sigil Holders of the world after the former destroys his school. His sigil is the Red Star, which allows him to create and shoot explosive orbs of energy from his palms.

* AntiHero: He was by all accounts a goody-goody and did his best to use his rather destructive powers to help those in need, but as the stakes get higher and he's forced to [[spoiler:kill a good deal of his own friends and family]], Mateo becomes this.

[[folder:]]

----
* Of [[Literature/ASeriesOfUnfortunateEvents Sunny Baudelaire]], being a young, giddy girl who likes cooking and sports a mouth full of razor-sharp teeth.
[[/folder]]

A group of six Sigil Holders who were once well-loved heroes who used their powers for good, but have long since been corrupted by those very powers, and have devolved into bloodthirsty criminals. [[spoiler:When they were still heroes, Cassius was part of this group, but was mistreated by Longinus for his poor grasp of the Red Star, causing him to defect from the group and form Nocturne]]. This group replaces Nocturne as the primary antagonist force of the story after [[spoiler:Cassius gets Mateo's half of the Red Star and abandons Nocturne, giving Spectrum the chance to obliterate the once fearsome organization and take center stage]].

* * EvilerThanThou: With or without Cassius, Nocturne didn't stand a single chance against them.

[[folder:Longinus]]
The founder and leader of Spectrum, Cassius' arch-enemy, and [[spoiler:Perseus' brother]]. His sigil is the Purple Earth, which grants his the ability to create massive shockwaves that can travel through anything, even the air.

* AffablyEvil: Far more courteous and soft-spoken than Cassius.
* AuthorityEqualsAsskicking: The leader of Spectrum and bar none its most powerful member.
* BadBoss: Averted. In direct contrast to how Cassius didn't give a damn about his employees, Longinus treats his fellow Sigil Holders quite well, and sees the Four Fractures as his family members.
* BashBrothers: [[spoiler:Was apparently this with his brother, Perseus, for a short time, before he went to form a group of his own to fight crime. When they meet up in the basement of the remains of Nocturne HQ, Longinus reminisces on how he and Perseus used to work so well together.]]
* DiscOneFinalBoss: With all that's revealed about him and all the characters he's connected to, it seems like he'll be the last enemy the protagonist have to face once all of the other members of Spectrum are down. But [[spoiler:Cassius takes his sigil and the story continues as Cassius opens a portal into the Collective's realm]].
* GreaterScopeVillain: He represents one in comparison to Cassius, [[spoiler:who's revealed to be a former member of Spectrum who was belittled by Longinus, causing him to defect and form Nocturne. Cassius' obsession with proving Longinus wrong is one of the biggest reasons why he wanted Mateo's half of the Red Star so badly, which prompted him to blow up Mateo's school, thus setting the story in general in motion.]] Despite this, Longinus isn't ''the'' BigBad of the story, for there are people and powers far greater than him.
* TheStoic: In contrast to the overtly loud and mentally unstable man that is Cassius, Longinus is soft-spoken and crystal clear in terms of his mental state, knowing exactly what he wants and what he needs to do to get it. [[spoiler:Though he despises the Collective and wants nothing but revenge on them]], he never gets mad when they're brought up in his midst, and often speaks ''fondly'' of them.

!Modeston Labs

A pharmaceutical company founded and headed by Oliver Modeston, which turns out to be (surprise, surprise) yet another once-noble organization of people that's been corrupted by the sigils. Except in Modeston Labs' case, the corruption happened due to its members being ''refused'' sigils from the countless statues and murals they've discovered. Instead, they use ''artificial'' sigils, patches imbedded in their skin that imbue them with powers far more complex and dangerous than those gained from regular sigils.

[[folder:In General]]

!!Oliver and his Inner Circle

[[folder:Oliver Modeston]]
The president and CEO of Modeston Labs, a brilliant teenager that started out as a mere high schooler that was bullied day in and day out. He discovered a goddess statue one day, knowing beforehand about its properties due to stories about them he heard in school. However, despite having the statue in his possession for weeks, he was never branded with a sigil.

This drove him to give himself powers of his own, and he eventually did so by developing the Artificial Sigil. Using himself as his own test subject, Oliver tests his sigil out by marching to his high school... and killing those who bullied him.

Gathering his friends up, they created Modeston Labs, where they made the creation of Artificial Sigils into a business, and intend to give those all over the world who were once like them a "fighting chance" (a.k.a. giving them dangerous and unstable powers to kill those who bully them with).

The ability his Artificial Sigil grants him is called Penetration, which makes him strong enough to pierce through almost anything with his hands.

* FromNobodyToNightmare: From a gifted, but weak high school boy to the superpowered president and CEO of a company that means to sell his superpower-granting invention to kids who were just like him, so they can get revenge on their bullies.
* ImpaledWithExtremePrejudice: What his Artificial Sigil allows him to do. He prefers stabbing his opponents right through the heart for a quick kill, but will occasionally pierce them in the side to weaken or torture them.
* PlotIrrelevantVillain: Taking him down is treated kind of like an optional side mission in a videogame; while Mateo recognizes Oliver as a genuine threat, Mateo sees Spectrum as the bigger issue and thus doesn't pay much attention to him. Mateo also ''never'' fights Oliver, only his employees, and only when they get in his way. That, and Oliver's the only ArcVillain whose goals have nothing to do with [[spoiler:Andromeda]], and [[spoiler:the race to enter the Collective's realm to find Melissa and confront Cetus and Andromeda]] would've more or less gone the same were he not in the story.
* SchoolBullyingIsHarmless: His primary motivation. He knows firsthand that this ''isn't'' true, and intends to give those who were bullied like him a chance at revenge.
* TheHunterBecomesTheHunted: Needless to say, he had a ''lot'' of fun when he was hunting down those who'd bully him in school and killing them one by one.
* UnskilledButStrong: Driving his fists into people is all he does. That said, he can do it ''very'' fast and has no qualms going straight for his opponent's hearts to kill them instantly.

!Protégés

Children under the tutelages of adult sigil holders, either because the adult wishes to pass their sigil down to the child, or the child's already been branded with a sigil and the adult wishes to help the child reach their full potential.

[[folder:L0ve (Dieta Jones)]]
A highschooler and classmate of Oliver and Titus's who witnessed North Bespoke Middle School's destruction, she got branded with a sigil a day before the attack when she found a goddess statue buried in her backyard. She becomes the protégé of Ophelia, who teaches her how to use her sigil to its fullest extent. Said sigil is the Hot Pink Heart, which grants L0ve the ability to conjure hearts that make anyone they touch fall madly in love with her and do her bidding.

* AlphaBitch: She's generally a horrid girl and used to call Oliver a "dickweed" and Titus "chronically bitchless" back when they went to school together. They couldn't do anything about it back then... but they definitely can now, which she finds out the hard way when she picks on Titus, who now is a superpowered and incredibly muscular man who hates her so much that he's actually ''immune'' to her hearts...
* BadBoss: She treats her "servants" very badly, using them as meat shields and "disciplining" them by cutting their limbs off with her chainsaw.
* BaitAndSwitch: How Oliver handles [[spoiler:her death]]. [[spoiler:When Titus informs Oliver that L0ve got raped and killed by Gustavus, Oliver flies into a rage... but not because he's angry about it, but because ''he'' wanted to be the one to rape and kill her.]]
* BitchInSheepsClothing: She may look and act like a common teenager, but beneath the surface of all that is a sadistic, unfeeling girl.
* ChainsawGood: Wields one to discipline her "servants" with and/or use as a last resort. [[spoiler:She ends up using it as her primary weapon after Aldrich takes her sigil away. Unfortunately, it couldn't stop Gustavus...]]
* CommissarCap: One that corresponds to her sigil's color, no less.
* CurbStompBattle: When she recognizes Titus, she starts taunting him and laughing at him. Unfortunately for her, Titus was no longer the meek little kid she used to pick on in school, and Titus loses his shit, pounces on her, and beats her unconscious with his bare hands, with [[spoiler:Perseus's]] intervention being the only thing that stops him from outright killing her.
* {{Cyberbullying}}: She ''used'' to do this when she was still going to school "for fun", with Titus being her main target, which explains why he'd always be silent around her despite being a LargeHam most of the time.
* FateWorseThanDeath: As NoOntologicalInertia doesn't come into play when [[spoiler:her sigil is taken]], those who become her "servants" are doomed to spend the rest of their lives mindlessly infatuated with her. [[spoiler:Perseus]], realizing this, chooses to put said "servants" out of their misery by using his powers to give them quick, painless deaths.
* FlatCharacter: L0ve is an AlphaBitch with superpowers, nothing more.
* {{Jerkass}}: She was this long before she got branded. One of the last things she said to Oliver (when they were still in school) was this:
--> '''Dieta:''' You're the one who needs to get a grip, arsehole! If you don't like the way I talk about you, then just plug your ears. Is your self-esteem that damn low? If so, you're more pathetic than I thought. But hey, if you want to continue getting bent out of shape over what I say about you, that's fine with me. And do you know why, "Ollie"?
--> '''Oliver:''' W-Why?
--> '''Dieta:''' Because at the end of your day, you mean fucking ''nothing'' to me. And the only reason you're here pissing and shitting your pants is because you've got ''nothing'' going on in your pathetic little life! Now, if you'll excuse me, I've got a class to get to. I'd tell you to have a good one, but I don't really care.
* FromNobodyToNightmare: From a high school bully to an AlphaBitch capable of turning anyone and everyone into her mindless slaves.
* [[spoiler:KilledOffForReal]]: [[spoiler:Once he realizes she doesn't have the Hot Pink Heart anymore, Gustavus rapes L0ve so badly she starts bleeding from all her orifices, and eventually dies from the blood loss.]]
* KilledOffForReal: [[spoiler:Raped to death by Gustavus.]]
** All those she bewitched with her hearts are ultimately hunted down and killed by Perseus after he realizes there's nothing he or anyone can do to free them.
* LackOfEmpathy: L0ve has no love for anyone. [[spoiler:She was even secretly planning to kill Ophelia, the woman who saved her from dying and took her in when the other members of Spectrum wouldn't.]]
* LogicalWeakness: Her powers won't work on people who already hate her guts. Titus takes one of her hearts straight to, well... his heart. It doesn't work because his hatred for her is just that strong.
* MeaningfulName: Her alias, L0ve, as her sigil grants her the power to make people fall madly in love with her. The way it's spelled (a "0" for an "o") also invokes social media handles, as she used to cyberbully people when she was still a highschooler. That, and the "0" stands for how she has no real love for anybody (except herself, of course).
* NoOntologicalInertia: Subverted. Neither her [[spoiler:getting her sigil taken away and neutralized nor her dying]] reverses the effects of her powers. As a result, the only way to free those who've been bewitched by her is to outright ''kill'' them, which [[spoiler:Perseus]] reluctantly spends the next five chapters doing to every last person she ever bewitched.
* PlotIrrelevantVillain: She has no plot relevance despite being a protégé of a member of Spectrum and having a genuinely formidable sigil. The only real significance she has is being [[spoiler:the first Sigil Holder that Aldrich takes the sigil of in the story proper. After that, she spends a couple chapters hacking at people trying to rob and kill her with her chainsaw, and is ultimately cornered by Gustavus, who rapes her to death.]]
* RapeIsASpecialKindOfEvil: [[spoiler:Once Gustavus realizes L0ve doesn't have her sigil anymore, he brutally rapes her to death.]]
* StoryBreakerPower: Anyone who's touched by her hearts will become mindlessly infatuated with her forever. Get touched by one in any way and you'll spend the rest of your life madly in love with her, even long after [[spoiler:she's dead and gone]]. Hence, her [[spoiler:getting her sigil taken away and destroyed and ultimately dying]] absolutely had to be done, as she could've theoretically turned all the world's populace into her mindless slaves.
* SurprisinglyRealisticOutcome: She used to cyberbully Titus and laugh in his face all the time when they were still only kids going to school together. However, when she tries doing the same thing to him in the story proper, it ends pretty badly for her, especially once it's revealed he's completely immune to her powers. Now Titus is a full-grown, superpowered man and she doesn't have a computer screen to hide behind, Titus unleashes all the hatred he's got for her in a CurbStompBattle that would've resulted in her death if [[spoiler:Perseus]] hadn't stopped him.
** [[spoiler:That, and after Aldrich takes her Hot Pink Heart away, L0ve is reduced to nothing more than a scared little girl with a chainsaw. And while she does manage to fight off a couple people attempting to rob and kill her, once Gustavus--''another'' full-grown, superpowered man--corners her and he realizes she doesn't have her sigil anymore, he effortlessly snatches her chainsaw out of her hands, breaks it, then proceeds to rape the defenseless high school girl to death.]]
* TooPowerfulToLive: The reason she's ultimately KilledOffForReal, for her sigil is so broken that she could theoretically TakeOverTheWorld with it.
* UsedToBeASweetKid: Subverted. After being told of [[spoiler:her demise]], Mateo asks Oliver if he thinks it was the Hot Pink Heart or Ophelia that screwed L0ve up. Oliver tells Mateo that it was neither and that she was always a terrible person, and that Mateo's wasting his time trying to find a deeper meaning behind her actions.

[[folder:Sonii (Elizabeth [=McCrae=])]]

A headstrong diva who was Longinus's protégé when she was aligned with Spectrum, but defected from the group after getting horribly mistreated.

Her sigil is the Lavender Microphone, which grants her the ability to amplify her voice to the point where she can create ground-shattering soundwaves.

* BerserkButton: For some reason, being called "hot and bothered". It may have something to do with her treatment back when she was in Spectrum, but it's enough for her to fly into a rage and outright get ''murderous''.
* [[HoistByHisOwnPetard Hoist By Her Own Petard]]: A Sigil Holder that kills people by blowing their heads up with her supersonic screams ultimately dies by blowing her own head up with her own supersonic scream.
* KilledOffForReal: She attempts to shout point-blank in Molly's face to make Molly's head explode, but right before Sonii lets out a scream, Molly covers Sonii's mouth up with duct tape, causing Sonii's scream to come out of her own ears, (which destroys her eardrums), her own nostrils (which shatters her nose bone), her own ''eyes'' (which makes her eyes burst), and finally the top of her own head (which makes her brain explode). The narrative describes her head after all this as a "pretty pile of mush".
* MakeMeWannaShout: The power her sigil, the Lavender Microphone, grants her. She primarily uses it, however, to give her singing a little more echo whenever she's on stage.
* MeaningfulName: Sonii has super'''soni'''c screams. It's also a ShoutOut to Anime/SuperSonico, which fits since Sonii makes a living as both a diva and as a musician.
* PastExperienceNightmare: She has nightmares of how terrible she was treated when she was a member of Spectrum, and often wakes up screaming. Unfortunately, due to the nature of her sigil, she always ends up shattering something since her screams are so loud.
* UnskilledButStrong: Making people's heads explode with her supersonic shouts is all she does in fights, but it's a OneHitKill in every sense of the trope and a ''very'' painful and messy way to go.
* YourHeadASplode: What she usually goes for whenever she gets into a fight. As her sigil allows her to amplify her voice, she likes finishing fights quickly by simply shouting at her opponents heads so loudly that it makes their heads blow up.
** This ends up happening to her, and in the worst way possible; she ends up blowing her own head up when Molly seals her mouth shut with duct tape, right before she was about to scream in Molly's face. The scream ends up coming out of ''every other orifice'', destroying her ears, nose, and eyes, and ultimately causing her brain to ''explode'', reducing her head to, as the narrative describes it, a "pretty pile of mush".

!Independents
[[folder:Rocardo Rocavich]]
The president and CEO of Roca Industries, a mining company that's actually a front for his real business: Gaia, a criminal organization specializing in weapons manufactory, which is failing due to other criminal organizations oversaturating the market. He's embittered because of this, and has decided to even the odds by hunting down and killing off his competitors. His Sigil, the Brown Rock, grants him the power to control rocks and turn his body into rock.

* AbnormalAmmo: He likes using jagged rocks in favor of bullets for his guns because they're cheaper. And yet, he wonders why Gaia is failing...
* AccidentalMurder: Very reckless with his sigil's powers and kills his own employees off with them constantly. He's never bothered by this, however, as he's got [[WeHaveReserves a surprisingly large amount of people in his employ despite the fact both his businesses are failing]].
* AllForNothing: His obsession with becoming rich and powerful ultimately results in him losing both Roca Industries and Gaia, the Brown Rock, and his life.
* BadBoss: Why anyone would want to work for this reckless, bloodthirsty JerkAss is anyone's guess.
* BerserkButton: Cassius. Rocardo hates him to pieces and spends the story proper doing nothing but hunting him down.
* BewareTheSillyOnes: He may be a hammy idiot, but he's still an unhinged man with superpowers who's hellbent on killing anyone and everyone he believes is in the way of his businesses being successful.
* BigBadWannabe: At his best, he's an infamous Sigil Holder with his own criminal organization made up of loyal grunts, but he's nothing compared to some Sigil Holders who have no organization or followers, but still manage to be very dangerous.
* BullyingADragon: Cassius may be crazy, and Perseus may be washed-up, but they're both still ''very'' powerful Sigil Holders, and Rocardo thought he could fight them both at the same time. Dumbass...
* TheCaligula: He's a terrible crime boss whose one-sided war against Nocturne ends up destroying his own syndicate.
* CallingYourAttacks: He tends to announce whenever he's about to attack, which of course gives his opponents a chance to either dodge or counter him.
* ColorMotif: Brown. He wears a brown suit, his sigil's the Brown Rock, and the guns his company manufactures are brown. He's also a huge piece of shit, and brown is the color of... you know.
* ConflictKiller: He's this for Cassius and Perseus for a brief time, as they both find him so annoying that they decide to fight together just to get rid of him. Naturally, Rocardo doesn't a chance against their combined might, and their battle ends with Rocardo reduced to a mangled mess.
* CurbStompBattle: He can at least put up a fight against "lesser" Sigil Holders, but he gets his ass handed to him once he faces off against Cassius and Perseus. His battle with them ends with him reduced to a mangled pile flesh, which Cassius ultimately crushes flat with a boulder.
* CuttingTheKnot: Being the brainless bastard he is, Rocardo relies on nothing more than his sigil and employees to brute force his way through any and every obstacle in his path.
* FlatCharacter: He's a {{Jerkass}} to all and kills anyone he perceives as a threat to his livelihood.
* FromNobodyToNightmare: Downplayed. Though he ''is'' a superpowered madman who's killed countless people, he's nothing in the grand scheme of things, and his various atrocities are child's play compared to the utter horrors the likes of Longinus and Aldrich are capable of.
* GlassCannon: His OneWingedAngel form. Incredibly strong, but it doesn't take long for Perseus and Cassius to literally reduce him to rubble.
* {{Irony}}: The man with the power to control rock ultimately meets his end by getting crushed by a boulder.
* JerksAreWorseThanVillains: His treat level is far lesser than that of the likes of Cassius and Longinus, but he's a much, much bigger HateSink than both of them combined. Cassius and Longinus at least have their respective backstories that give them reasons for their demeanors and actions, and deep down ''are'' good people. There's nothing good about Rocardo whatsoever, and he has no reason to be the way he is beyond being mad his businesses are failing.
* KilledOffForReal: Cassius and Perseus simply assault him till he dies. Cassius crushes his corpse with a boulder for good measure.
* OneWingedAngel: Transforms into a towering rock monster to fight against Perseus and Cassius.
* PlotIrrelevantVillain: He has no real role to play in the story proper, serving as a ''very'' minor inconvenience to Cassius and Perseus, who dispose of him pretty quickly.
* LoneWolfBoss: The only Sigil Holder to never meet Mateo, have no affiliation with Spectrum, or have no obsession with [[spoiler:Andromeda]].
* StupidEvil: He makes increasingly foolish decisions, with his decision to fight both Cassius and Perseus at the same time being so incredibly dumb that in ultimately results in his death.
* TheUnfettered: He wants to sell weapons and kill Cassius and nothing else matters.
* UnskilledButStrong: Rocardo doesn't have any skill at using the Brown Rock beyond whaling on his foes with huge rock fists, causing landslides, and using sharpened rocks as ammunition for his guns. That said, his body count is ''huge'' and he kills a lot of people in the story proper, even if most of them are his own employees.

[[folder:Aldrich [[spoiler:(Murdoch Mandelson)]]]]
A mysterious man in a black gas mask who appears only ''once'' in the first third of the story, being the last thing Mateo saw before he was knocked unconscious by the explosion that destroyed North Bespoke Middle School. He starts appearing more frequently in the second third of the story, where he stalks and ambushes Mateo constantly, and occasionally trades blows with Sigil Holders. Whenever he's asked who he is, he states his name is "Aldrich" and nothing else.

It's eventually revealed that his real name is Murdoch Mandelson, and he's the husband of Melissa Mandelson, the father of Mateo Mandelson, and the third member of the group Perseus and Cassius formed when they first got their sigils. Murdoch is a vengeful man who's hellbent on ridding the world of sigils, for his years of dealing with Sigil Holders who've gone mad with their powers coupled with losing Melissa to the Collective's made him believe sigils are a bane on humanity. To achieve this, he uses his own sigil:

The Black Hole, which grants him the power to decay anything he touches at will. He uses this power to "neutralize" sigils, rendering them permanently useless to their holders.

* BlessedWithSuck: Averted. The only thing stopping Aldrich from having a perpetual TouchOfDeath is that he can willingly turn the Black Hole on or off. [[spoiler:Andromeda may be cruel, but she isn't ''that'' cruel.]]
* FallenHero: Though not as bad as Cassius, as what Murdoch does in the story proper is at least understandable due to the horrific effects sigils have on people.
* FromNobodyToNightmare: From a meek salaryman to a superpowered DiabolicalMastermind.

! The Collective

!! The Mother and the Father

[[folder:Mother [[spoiler:Andromeda]]]]
The "husband" of Cetus, the mother of the twenty-six Letters, and ''the'' BigBad of ''The Marvelous Mateo Mandelson''. She's a godlike entity of unknown origin who created the sigils after discovering she could reverse engineer the elements of Earth with her psychic abilities.

* AlwaysSomeoneBetter: Stronger than the Four Prisms (Awakened Aldrich, Unleashed Wilkins, Omega Cassius, Cetus) combined.
* AngelicAbomination: She takes traditional angelic traits and twists them in a rather horrifying manner, as evidenced by how her appearance is usually described by the narrative.
* ArchEnemy: Aldrich. She considers giving him the Black Hole her one and only "error in judgement".
* BadGuysDoTheDirtyWork: She ends up being the one to kill Cetus, as Cetus had CompleteImmortality. Since she was the one who gave him that power in the first place, all she does is take his sigil away, and all his injuries over the decades finally catch up with him and he ''explodes''.
* BigBad: She's the one responsible for the abundance of insane, superpowered people wreaking havoc in the world, and as a result becomes the final obstacle for Mateo and his family as vanquishing her is paramount to ending the hell the sigils created.
* BigBadEnsemble: With her "husband", Cetus. They're the most formidable threats to Mateo and his team, being the ones who've been calling the shots the entire time. Andromeda turns out to be worse than Cetus, however, and once the former kills the latter by depowering him, Andromeda becomes the last (and most powerful) obstacle.
* CantKillYouStillNeedYou: The only reason she doesn't immediately kill Mateo or any other Sigil Holder. Since the sigils are fractions of her own power, she has to take the sigils back from the Sigil Holder in question before taking their lives. If the holder dies, the sigil dies with them, and that fraction of her power will be lost forever. However, it seems she values some Sigil Holders more than others. On one hand, she's cautious when it comes to Mateo and Longinus, both of which have versatile and destructive powers. On the other hand, she had no qualms slaughtering Thornton and Victor, both of which had powers that're more situational and useless in certain aspects.
* TheCorruption: Her influence manifests as the sigils that give those who're branded with them incredible power at the cost of their sanity. According to Aldrich, Andromeda uses the statues and murals strewn about the world as a way to tempt those who find them (through HearingVoices when they look at the murals and touch the statues).
* DeaderThanDead: Mateo, Molly, Murdoch, and Melissa team up to kill her in the present, while Cassius and Perseus snap her original statue in half in the past, destroying her only chance to be brought back to life and ridding the world of her before anyone could ever be corrupted by her.
* DiabolusExNihilo: Her only purpose in the story proper is to take out Cetus because he became so strong that nobody else but her could. Other than that, she's nothing more than a "true final boss" for Mateo, Killian, and Molly to fight against and end the story off with a bang.
* TheDreaded: It's telling that, out of all the Sigil Holders, the one who's the most batshit insane (a.k.a. Cassius) is the only one who actually worships Andromeda and sees her in a positive light. Everyone else, however, speaks of her with a mix of fear and revulsion, and see the powers they've been given as curses they'd do anything to get rid of.
* FinalBoss: ''The'' ultimate enemy of the story and the most dangerous of them all, being the very thing that caused all the others to exist in the first place.
* FlatCharacter: She's a force of nature in every sense of the term, serving, from a narrative standpoint, as little more than a source of the power that has corrupted practically every character in the setting for Mateo to destroy and liberate everyone from.
* GenericDoomsdayVillain: Where she came from and what her life was like before the story proper is never discussed, and whatever motivation she has for branding people with sigils is never revealed, though it's hinted it's because she wished to sate her curiosity. Regardless, it's clear Cetus is the true BigBad of the story, while Andromeda is just there so the sigils have a source for [[spoiler:Mateo]] to eliminate.
* GreaterScopeVillain: The true power behind every villainous Sigil Holder in the setting.
* LightIsNotGood: She's a being of pure white with a distinctly angelic appearance... and she's the sole cause of everything wrong in this story.
* OntologicalInertia: Her death in the present doesn't cause the countless people around the world who've been branded with her sigils to be free of the magical markings. This is what prompts Future Molly to use the last of the Vermillion Clock to send Cassius and Perseus back to time, to the day where they originally discovered Andromeda's mural and statue, to prevent the hell they unleashed on the world from ever happening.

[[folder:Father [[spoiler:Cetus]]]]

The president and CEO of Ceto Industries--the company Cassius and Perseus worked at when they were just salarymen--the first human Andromeda ever came into contact with, and the greatest of the Sigil Holders. He is the "husband" of Andromeda, the "father" of her twenty-six Letters, TheManBehindTheMan for Nocturne, and the one who decides for Andromeda who should be branded with what sigil.

His sigil is the Clear Conscience, which makes him a RealityWarper with CompleteImmortality.

* AbusiveParents: As the Letters are technically his children and he treats all of them terribly, he's absolutely this.
* BigBadWannabe: Though he's narratively the BigBad due to his connections to Cassius and Sigil Holders in general, since Cetus is still just another Sigil Holder, his actions are completely subservient to Andromeda. As a result, the final fight with him is less stopping the one responsible for the madness that's consumed the world and more taking out yet another insane man with a dangerous power. And in the end, Andromeda, the one who gave Cetus his power in the first place, is the one who takes it away from him.
* EvilerThanThou: Not even ''Longinus'' can hold a candle to him.
* KilledOffForReal: Andromeda strips him of the Clear Conscience, causing him to lose both his RealityWarper powers and his CompleteImmortality in an instant. All his injuries over the years catch up with him in an instant, causing him to ''explode'', and be reduced to a puddle of blood and guts.
** This happens to him once more when Cassius and Perseus finally destroy Andromeda's original mural and statue. Cetus ends up losing the Clear Conscience, and eventually dies of old age before he could ever become a villain.
* TheyLookJustLikeEveryoneElse: The reason he was able to get away with his crimes for so long. Unlike how loud every other Sigil Holder dresses, Cetus has the sense to style himself as an unassuming old man. It also helps that his sigil is ''clear-colored'', meaning, unlike everyone else's sigils, [[FridgeLogic his is completely invisible and undetectable]].

!! The Letters

[[folder:A]]
Andromeda's first son and the leader of the letters, who takes over the role as BigBad after killing Longinus. An incredibly powerful, but intelligent and stoic being that only wishes to enforce his mother's will upon the world via "reining in" Sigil Holders.

[[folder:Z '''(Spoilers Unmarked!)''']]
!! Gorgophone
The twenty-sixth Letter and the only child of Andromeda to actually ''be'' her child, whom Andromeda created (from ripping out her own left eye) to continue her work long after she's dead and gone. Cassius and Perseus meet her at the excavation site, where Andromeda's original mural and statue reside, after Future Molly reverts time back to the point where they were just salarymen.

She possesses what Andromeda considered to be "the ultimate sigil": The Rainbow Soul, which grants Gorgophone literally every sigil power in existence.

Mateo's best friend, who survived the destruction of their school, and eventually crosses paths with Mateo and joins up with him. His sigils, the Blue Gear, allows him to conjure gears of any size.

* BigBadWannabe: It's clear from what he's trying to accomplish that he wants to be a major threat, and while he is in his own right, he's absolutely nothing compared to the likes of Longinus, Aldrich, and [[spoiler:Omega Cassius]].

* LoneWolfBoss: The one and only Sigil Holder to never meet Mateo and have no history with Cassius, affiliation with Spectrum, or obsession with [[spoiler:Andromeda]].
* StupidEvil: As formidable as he can be at his best, Rocardo is ultimately a moron and a {{Manchild}} who can't accept the fact he's a failure.

* TheCaligula: He's a terrible crime boss whose war against Nocturne ends up destroying his own syndicate.

* FlatCharacter: Rocardo is a {{Jerkass}} to all and kills anyone and everyone in his path. Nothing more, nothing less.

The president and CEO of Roca Industries, a failing mining company. He's actually a Sigil Holder whose company's a front for his ''real'' business: Gaia, a criminal organization that specializes in weapons manufacturing... which is ''also'' failing due to other criminal organizations oversaturating the market. He's incredibly embittered as a result and has decided to even the odds by hunting down and killing off his competitors, with Nocturne being next on his list.

His Sigil is the Brown Rock, which grants him the power to control rocks and turn his body into rock.

* JerksAreWorseThanVillains: His treat level is far lesser than that of the likes of Cassius and Longinus, but he's a a much, much bigger HateSink than both of them combined. Cassius and Longinus at least have their respective backstories that give them reasons for their demeanors and actions, and deep down ''are'' good people. There's nothing good about Rocardo whatsoever, and he has no reason to be the way he is beyond being mad his businesses are failing.
* KilledOffForReal: Cassius and Perseus basically assault him till he dies. Cassius crushes his corpse with a boulder for good measure.

The titular character and main protagonist, a boy who's put on the path to fight against Nocturne and the Sigil Holders of the world after the former destroys his school. His Sigil, the Red Star, allows him to shoot explosive orbs of energy from his palms.

* PostClimaxConfrontation: She appears in the story for the first time after Andromeda is vanquished and Future Molly sends Cassius and Perseus back to time, to the cave where they discovered Andromeda's original mural and statue. However, while she's presented as the last enemy for them to defeat, she reveals she doesn't want to continue her mother's work, and that Cassius's decision to let Andromeda brand him has caused a GroundhogDayLoop that'll always lead him and Perseus back to the cave. Fortunately for her, Cassius finally rejects Andromeda and destroys her mural and statue, freeing them all from her influence and the GroundhogDayLoop.