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Lucifer
Voiced by: Kōki Uchiyama (Japanese), Griffin Puatu (English)
Click here to see him unmasked
Eldest son of Satan and leader of the Illuminati. He is the demon king presiding over light.
- Affably Evil: Introduces himself very politely despite breaking the seals of True Cross Order branches around the world.
- Angelic Abomination: His true form seen in Gehenna is an incredibly bright four pointed star with eyes.
- Big Entrance:
- He makes projections of lights and destroys the barrier around the academy when he appears.
- Even later when introducing himself personally to Yukio he makes a big entrance despite the circumstances.
- Blessed with Suck: The most powerful of the Kings with only Satan surpassing him, yet his bodies usually degrade within ten years only to gain a new human form to repeat the cycle. In the meantime, he always has to be on life support just to keep his body going. He clearly felt the perks weren't worth the suffering, see Suicidal Cosmic Temper Tantrum for more below.
- Body Backup Drive: After his host body was destroyed by Shemihaza on the Blue Night, Lucifer has changed bodies three times but he replaces the body from the neck down instead of possessing a new one, at least until his perfect clones are ready.
- Cool Helmet: When he first appears, he's wearing a golden mask that vaguely looks like a falcon. Mephisto compliments him on it.
- Dark Lord on Life Support: Though only seen in the shadows in the beginning, it is heavily assumed that, during his preparation for his Big Entrance, he's shown to have been connected to a heart monitor and IV drip. When we do see all of him, it's clear his condition is much worse than what was implied before.
- The Dragon: He's the second strongest demon after Satan and the most loyal out of his demon offspring.
- Elemental Hair Colors: He's the Demon King of Light and his physical body has platinum blond hair.
- Even Evil Has Standards: Expresses utter disgust towards Gedouin and his cruelty before vaporizing him for his disobedient actions.
- Humanoid Abomination: Like all demons, he's an Eldritch Abomination wearing a human form. Unlike most demons, his raw power makes this fact nearly impossible to hide.
- Idiot Hair: He has a spike of hair sticking up on the top of his head.
- Knight of Cerebus: Even more so than the previous one (Amaimon), as Lucifer's first appearance even in shadow is when things start to get very serious. Come his first full on appearance, and Cerebus Syndrome really starts kicking in for the series.
- Knight Templar: Genuinely believes that mixing the worlds of Gehenna and Assiah will solve the world's ills. Mephisto disagrees, believing that the desire to overcome one's bad situation makes humanity unique.
- Light 'em Up: As the King of Light, he can generate light-blased attacks that disintegrate people.
- Light Is Not Good: Leader of the big baddies and the King of Light.
- Masking the Deformity: He initially wears a mask because his face is horribly disfigured and blackened by illness, as a result of his human body not being able to withstand his massive power.
- No Sense of Personal Space: He shows no concern for personal space he personally talks to Yukio.
- Possession Burnout: Lucifer's human bodies wouldn't last even ten years because he's the strongest among the Demon Kings barring Satan. He found a way to make his bodies last a bit longer through elixir.
- Rank Scales with Asskicking: He's second in the demonic hierarchy of Gehenna, right below Satan himself. Even in his sickly state, Mephisto states that he, the 3rd strongest demon in Gehenna, is no match for Lucifer.
- Steven Ulysses Perhero: Lucifer means "Light-Bearer" and he's the Demon King with control over light.
- Suicidal Cosmic Temper Tantrum: He threatened to destroy the entire world and everything on it because of the pain he suffers from repeatedly dying. Mephisto managed to stop him by finding a means to use clone bodies or the elixir of immortality.
- Super-Power Meltdown: He pushed his human host just a bit too much with his big entrance and it caused him to cough up some blood. Even showing up in Assiah to talk for a short period of time causes his human body to break down like his father does, despite still being hooked up to everything meant to keep him stable.
- Tears of Blood: Shortly after showing his human face for a brief time to speak with his subordinates he started suffering from these (along with a Psychic Nosebleed) to show how fragile his body really is.
Saburota Toudou
Voiced by: Kazuhiro Yamaji, Jun'ichi Suwabe (young) (Japanese), Ray Chase (English)
Click here to see his younger form
A former exorcist, now demon. His reasons for turning traitor remain unknown but are likely related to his jealousy of, and attempts to catch up with, his father and siblings.
- Abusive Parent: It's implied he's emotionally abusive of his daughter. The only time they're shown talking to each other, all Toudou does is calling her "boring".
- Arranged Marriage: His father arranged for his wife to marry him.
- Batman Gambit: Pulls one off by obtaining both demon eyes through a bit of manipulation and trickery, then using them to deliberately awaken the Impure King. He knew that this would cause Tatsuma to show up and try to defeat the Impure King using his familiar Kurara. This weakened Tatsuma, allowing Toudou to kill him (who was saved by a revived Karura) and allow him to eat Karura to gain his power. It had all gone according to plan.
- Black Sheep: Was the odd one out in his family, lacking the pride and confidence of his father and brothers.
- Bloodbath Villain Origin: Killed his entire family save for his daughter on the Blue Night.
- Break Them by Talking: He tries to do this to Yukio, thrice.
- First one: after revealing himself as an exorcist fallen to a demon, he mentioned he was always in the shadow of his father and brothers, and he never could voice his doubts about his path. It rattles Yukio, but Yukio decides that he is not Saburota, but himself.
- Second one: In their next confrontation, Saburota says that Yukio's father and brother are what have defined his paths in life and that he had no real choice in his path, leading him to despise his brother for having no idea what agony he went through. Yukio admits that he does love and hate his brother, but above all else he hates himself the most.
- Third one: Following his discovery of Yukio's blue eyes (after almost killing him) and after Yukio thought Saburota was destroyed, Saburota regenerates and comments that self-loathing is the first step to becoming a demon and that Yukio's true nature is that of a demon. Yukio has had enough of Toudou by this point.
- Cannibalism Super Power: He noms demons to control their powers.
- Complete Immortality: The logical conclusion of combining From a Single Cell, Fountain of Youth, and how demons tend to have extremely long lifespans.
- The Corrupter: He convinced a loyal member of the Kyoto Branch Office to give him the dangerous Right Eye of the Impure King. He's also actively attempting to manipulate Yukio for unknown but definitely unsavory ends.
- The Dog Bites Back: He was belittled and mocked by his father and brothers for most of his life. On the Blue Night, he killed his entire family aside from himself and his daughter Homare once he saw the perfect chance to get away with it by making it look like his victims were burned to death by Satan.
- Driven by Envy: He claims that his major reason for becoming Illuminati is because of his envy towards his elder brothers and father.
- Evil Feels Good: He implies this much while talking to Yukio. Said to Yukio almost verbatim as "it's nice to be a demon".
- Faux Affably Evil: He is always very polite, even when he betrays both the exorcists and Mamushi. In fact, he arguably became even more polite after he revealed himself to be evil.
- Four Eyes, Zero Soul: Before regaining his youth, he wears glasses. Presumably his eye sight improved with the change.
- Freudian Excuse: He wanted to be like his father and brother, but was discontent with living a life he felt was shaped by others. Ultimately he became a demon and is working for his own goals.
- Hereditary Hairstyle: All members of the Toudou family have dark hair with a light streak in the bangs.
- High on Homicide: He felt very satisfied from killing his family.
- Make It Look Like an Accident: Set fire to the Toudou home with all the bodies inside to make it look like they were victims of the Blue Night.
- Manipulative Bastard: He manipulated Mamushi to get her to help him in his plans by exploiting her distrust in the higher-ups. He also got Yukio to talk with him during their fights despite Yukio knowing, and earlier explained to Rin and Shiemi how dangerous talking with a demon can be.
- "Not So Different" Remark: He keeps telling Yukio they are the same because because both have an inferiority complex towards their older brothers. He uses this to try and convince Yukio to betray the True Cross Order and join Illuminati like he did. Toudou is right in some aspects about Yukio's darkest feelings, but Yukio turns out to be self-aware and moral enough to stay on the side of good.
- Not So Similar: Toudou and Yukio both grew up in the shadow of their fathers and older brothers, causing them to grow a resentment towards their positions as exorcists and the younger brother of their families. Toudou assumes they're alike for this reason, but what he doesn't understand is that Yukio is genuinely loved and cared for by his family and friends. While Toudou always blamed his family, Yukio is aware that his shortcomings are the result of his own insecurities and self-loathing. Finally, while Toudou works for Illuminati for the sake of making himself feel important, Yukio fools Lucifer to destroy Illuminati's base and later, he reconciles with Rin once both reach the mutual understanding they needed.
- Obfuscating Stupidity: He was first seen as an Upper Second Class exorcist with a timid personality who provided some exposition about an incident involving one of the demon eyes. He seemed like an incompetent, but reasonably brave and decent, guy. And then it turns out it was all an act. He had in fact already turned traitor and only exposed himelf as The Mole in the chapter in which he was introduced. He has since shown considerable competence and cunning. He is now one to watch out for.
- Psychological Projection: He's convinced that Yukio is meant to be a villain like him, because they have vaguely similar family circumstances that make them feel inferior to their fathers and older brothers. He's expecting Yukio to join Illuminati to take his anger out on the world like he did. Yukio does agree join to Illuminati, but only to destroy their base from within, proving that Toudou was wrong about him.
- Psychopathic Manchild: His reasons for being with the Illuminati boils down to him throwing a tantrum over how he was never accepted by his family and never could match their expectations. His age regression after eating Karura just makes it more obvious.
- Reduced to Dust:
- In Kyoto, he gets burnt to ashes. He gets better.
- He is later chosen to be an important sacrifice to achieve the Illuminati's goals, and is again reduced to ashes, or telomeres, according to Egyn.
- Shadow Archetype: He embodies pretty much all of the worst traits in Yukio's personality taken to the max.
- Sibling Murder: Killed both of his brothers.
- Til Murder Do Us Part: His wife through an arranged marriage was among his victims when he killed his family.
- Villain Takes an Interest: In his own words, he is "very interested" in Yukio, constantly telling him to join Illuminati.
- Wouldn't Hurt a Child: On the Blue Night, the only member of his family he didn't kill was his daughter Homare who was just a child at the time.
- Youthful Freckles: A frightening inversion, as he turned younger following devouring Karura but he's still a 55 years old.
Homare Toudou
Voiced by: Megumi Han (Japanese)
The captain of Phosphorus, Lucifer's bodyguards. She is also Saburota's daughter.
- The Dragon: She acts as Lucifer's assistant.
- Get A Hold Of Yourself Man: She slaps Lucifer when he uses his powers in a rage as she reminds him he's about to bring their airship down.
- Hates Their Parent: When her father is about to be killed in an experiment, Homare makes clear she won't even mourn him when he's gone. Given that she witnessed her father killing all her other relatives, it's not surprising she couldn't care less about him.
- Sole Survivor: She was the only survivor of her father's massacre at the Toudou household on the Blue Night.
- Stoic Spectacles: She wears glasses like her father and almost never changes her stern expression.
- Strong Family Resemblance: She looks like a younger, female Saburota, making obvious they're father and daughter.
Illuminati Spies
Little is known about them as a whole but so far only one of them has had their identity revealed.
- Even Evil Has Loved Ones: The spy that Lightning and Angel interrogate breaks when Lightning threatens to harm his wife and child.
- The Mole: Their main purpose for the order is to infiltrate and keep tabs on the Order of the True Cross, so far there are two in the Vatican itself and one in the Japanese branch. For tropes specific to the Japan Branch mole see Renzou Shima in the Cram School Student's section.
Michael Gedouin
Voiced by: Nobuyuki Hiyama (Japanese), Alejandro Saab (English)
A doctor of the Illuminati.
- Arc Villain: He's the main villain of the Inari arc.
- Fat Bastard: His body is completely round and he's one of the most despicable villains in the series.
- Four Eyes, Zero Soul: Wears glasses and is a complete Jerkass.
- Gonk: He has a very squat design which suits him perfectly since it makes him look like a very fat child instead of a normal adult, he is even shorter than Izumo's mother when he is standing next to her sitting in a wheelchair.
- Hate Sink: He's the absolute most disgusting and repulsive, both in appearance and personality, villain in the series.
- Humans Are the Real Monsters: Uses an argument along the lines of humans being worse than demons to justify his atrocities when Rin calls him out. He himself is worse than a demon, but fewer others are.
- Idiot Hair: He has an ahoge, fitting his goofy Gonkish character design.
- It's All About Me: Cares about absolutely nothing aside from pleasing Lucifer and his own personal advancement.
- Jerkass: He has no problems telling Izumo exactly what he will do to her and her sister after showing them what was left of their mother after he experimented on her for years.
- Karmic Death: Everything he did was to gain praise from Lucifer. Fittingly, not only does Lucifer vaporize him for his disobedience, he expresses disgust at Gedouin's cruelty just before doing so.
- Mad Scientist: Whoever he experiments on does not come out in one piece.
- One-Winged Angel: He uses the Savior Mask to turn himself into a huge monster to try to kill the heroes.
- Not Quite Dead: Manages to survive getting incinerated by the heroes thanks to the elixir experiments he conducted on himself. Lucifer fixes that in the next chapter.
- Perpetual Smiler: He is always smiling, especially when he's causing people pain.
- Sadist: He relishes over others' suffering.
Maria Yoshida
Voiced by: Aya Endo (Japanese)
A researcher for the Illuminati who befriended Izumo when she was a child.
- Defector from Decadence: She betrayed Illuminati when she learned Gedouin was experimenting on Izumo's mother, who has been possessed by the Nine-Tailed Fox, and he was planning to use Izumo and Tsukumo as spare test subjects when their mother's body broke from the experiments.
- Friend to All Children: She was very friendly to Izumo and Tsukumo, even choosing to betray Illuminati to protect them.
- Hair of Gold, Heart of Gold: She was a blonde and despite being a member of Illuminati, she was a genuinely good and kindhearted person.
- Identical Stranger: She looks like an older Shiemi.
- No Good Deed Goes Unpunished: When she learned Gedouin was going to experiment on Izumo and Tsukumo after their mother became useless for the experiments, she sent Tsukumo to a good family under the protection of the True Cross Order. She then tried to escape with Izumo, but Gedouin caught them and executed Maria for her betrayal of Illuminati.
- Poor Communication Kills: She took Tsukumo to a safe place outside of the Illuminati's reach, but she failed to tell Izumo about where Tsukumo went before separating them. This made Izumo feel betrayed by her and she tried to escape on her own instead of waiting for Maria to take her somewhere safe. As a result, Maria was killed by Gedouin and Izumo stayed a prisoner of the Illuminati for several years.
- Posthumous Character: She only appears in Izumo's flashback, which ends with her death at hands of Gedouin.
- Token Good Teammate: She's by far the nicest and most morally correct member of Illuminati seen in the series. She even betrayed Illuminati after realizing how evil they truly were.
- Too Good for This Sinful Earth: She was a sweet and kind woman who was mercilessly killed by Gedouin after she betrayed him to try and protect Izumo and Tsukumo from him, establishing how evil and ruthless the Illuminati is.
Iblis
Demon King of Fire.
- Astonishingly Appropriate Appearance: She's the Demon King of Fire with dark skin, yellow eyes, and a body that seems to naturally exude flames.
- Bedlah Babe: She wears a bedlah akin to an Arabian dancer.
- Big Sister Instinct: When she sees exorcists attacking her little brother Egyn, Iblis' reaction is to burn the exorcists in her flames while yelling that they stay away from Egyn.
- Braids of Action: She wears her hair in a long braid and can roast her enemies with her flames.
- Cleavage Window: Her top has an opening that shows off her cleavage.
- Dark Action Girl: She's a highly powerful demon king with devastating fire attacks. She also sides with Lucifer and Satan, both who seek to destroy everything in the human world.
- Early Installment Character-Design Difference: In her initial appearance, she had a Third Eye in the centre of her forehead, but this was removed in her later appearances.
- Femme Fatalons: She has very long, sharp nails and is allied with Lucifer's cause.
- Fiery Sensuality: She's the Demon King of Fire and her host body is an attractive, big-breasted woman dressed in revealing clothing.
- Fire Is Masculine: Inverted. Iblis is the Demon King of Fire, yet is the only female among the Kings.
- Flaming Hair: Not completely, but flames come out of her hair.
- Having a Blast: She can create large flame explosions in the air.
- Ms. Fanservice: Her outfit exposes her cleavage, midriff, and legs.
- Playing with Fire: As the King of Fire, she has a natural affinity for fire and can summon giant torrents of flame.
- She Is the King: Although she's a woman, she holds the title of a demon king like her brothers.
- The Smurfette Principle: Iblis is the only female Demon King.
- Vapor Wear: She wears a skimpy top that makes her lack of a bra obvious. She also doesn't seem to wear panties under her loincloth.
Egyn
Demon King of Water.
- Cute Is Evil: He's child-sized and wears an adorable shark costume, but he's still one of the demon kings allied with Lucifer and shares his goal of destroying the world to recreate it.
- Elemental Barrier: He's able to protect himself from incoming attacks by forming a water barrier around himself.
- Evil Genius: He's in charge of the Illuminati's science operations.
- Making a Splash: As the King of Water, Egyn has water-based abilities.
- Non-Action Guy: Even though he's a demon king, Egyn isn't a fighter. When Satan starts a full-on war with the True Cross Order, Egyn does nothing but encase himself in a water bubble to defend himself from the exorcists and leaves the fighting to Iblis.
- Shrinking Violet: He tends to cling to and hide behind his siblings around strangers.
Astaroth
Demon King of Rot.
- Brown Bag Mask: He covers his head with a paper bag, from which mushrooms are sprouting from the top and the mouth.
- Plague Master: His domain includes bacteria and diseases. The Impure King, which was also this, was among his most powerful Kin.
