List of characters that inhabit ''LightNovel/IchibanUshiroNoDaimaou''. As usual, spoilers might be below.

!!Akuto Sai

Left on the steps of a church as an orphan, Akuto thought he was going to be the good guy. He traveled to the Constantin Magical Academy to study and hone his magical abilities, in hopes that he would one day become a great priest in the service of the church. However, on his first day, the vocational raven proclaimed that he was destined to become the next Maou, or Demon King. As a result, most of the school has turned against him, and even his attempts at trying to ScrewDestiny only serve to drag him further down the path of evil. He's attracted a small harem of followers, ranging from a robotic private detective to a young fanboy, who all have their own reasons for wanting to see whether or not Akuto will become the next Maou.

->Voiced by: Creator/TakashiKondo (JP), Creator/ChrisPatton (EN)
* AccidentalPervert
* AntiAntiChrist
* {{Badass}}: It's hard to take down a dragon with little other than your own fists and not be one.
* BadPowersGoodPeople: Akuto tries to use his powers for good purposes, but they either backfire, such as when he tried to zap a demon to stop it, which then made it stronger, or people radically misinterpret it as him using it for evil, such as when he's using his power to protect Hiroshi from some thugs, only to have Junko show up late and assume he was abusing his power.
* BrutalHonesty: Downplayed in the manga and the anime, but in the novels, he really has no problems with telling people such as Fujiko ''exactly'' what he thinks about them.
* CassandraTruth
* CloseCallHaircut: Courtesy of Junko in episode 3. Subverted when it's shown that he didn't completely avoid the strike and got a small cut near his eye.
* DarkIsNotEvil
* DarkMessiah
* DoesNotKnowHisOwnStrength: Well, after his first time using it he is aware of how ridiculously powerful he is, but he nevertheless has serious trouble controlling it.
* DragonRider:
* FirstKiss: With Lily.
* FlatEarthAtheist
* HealingFactor
* HeroWithBadPublicity: Accused of essentially being the Antichrist, his every attempt to prove otherwise only feeding into it
* IShallTauntYou: Not so much in the manga or anime, but he pulls it off a few times in the novels. For example:
-->Bullies: (Threatening Akuto) "Donít talk back to us. Donít you know what happens when you do that?"
-->Akuto: "Well, thereís two of you, so will you put on a [[BokeAndTsukkomiRoutine manzai]] act?"
* {{Naytheist}}: Justified, since the gods actually ''are'' just systems.
* NiceGuy: In spite of his heritage/destiny.
* ObliviousToLove:
* PersonOfMassDestruction
* PunnyName: His quest to be a paragon of goodness is doomed from the start when his very ''name'' pronounced phonetically (''Sai Akuto'') literally rhymes with "Ultimate Villain" in Japanese.
* RageAgainstTheHeavens
* RedEyesTakeWarning
* SatanIsGood
* UnskilledButStrong: Though he eventually upgrades to Strong and Skilled.
* TheSoCalledCoward
* TomatoInTheMirror: [[spoiler: It turns out that demon kings are artificial human beings.]]
* VillainBallMagnet: No matter how hard he tries, he just cannot seem to prove to the other students that he's not a bad guy.

!The Maou's Followers
!!Junko Hattori

A descendant of a powerful family of ninjas dedicated to following the (Japanese) traditions of their god, Suhara, and fighting evil. Junko came to the Academy with Akuto after a chance meeting and became friends with him. However, after actually arriving at the school, Junko has had a love-hate relationship with him, trying to square her feelings for him with the possibility that he will become the next BigBad of the whole world. The fact that most of their conflicts end with him destroying her clothes doesn't help.

->Voiced by: Creator/YokoHikasa (JP), Creator/LuciChristian (EN)
* ActionGirl:
* ArrangedMarriage: To [[spoiler: Akuto, though she is too nervous to tell him.]]
* BadassAdorable:
* CannotSpitItOut
* ClothingDamage: Poor [[ButtMonkey Junko...]]
* CoolSword:
* CurtainsMatchTheWindow: Blue hair and eyes.
* EstablishingCharacterMoment: In her first scene, she physically attacks Akuto because she saw him with her grandmother and automatically assumed that he was trying to mug her.
* FanNickname: Blue
* GirlWithPsychoWeapon: Depending on her mood.
* HairDecorations: Two pink barrettes on the left side of her face.
* KnightTemplar: Moreso in the anime than the manga.
* LadyOfWar
* LaserGuidedKarma: In episode 3, she assembles a lynch mob to kill Akuto, but at the climax of the episode, Keena makes a comment that causes said lynch mob to turn on Junko as well. To really drive the point home, when Junko insists that it's a misunderstanding and that they should listen to what she has to say, Akuto tells her that he's been saying ''the exact same thing'' to her this whole time.
* MsFanservice
* PoorCommunicationKills: Her FatalFlaw; she constantly misinterprets Akuto's attempts to do good as evil and tries to kill him based on such conclusions, rarely, if ever, giving Akuto a chance to clear things up in the process.
* TheOjou:
* {{Sarashi}}[=/=]{{Fundoshi}}: She wears both of them underneath her clothes.
* SpotlightStealingSquad: The special episodes focus mainly on Junko.
* {{Tsundere}}: Mostly type A.
* YouGottaHaveBlueHair

!!Hiroshi Miwa

It's unknown what, if any, magic he wields. However, Hiroshi seems to have a good knack for knowing the various relationships and events happening between the people at the Academy. After Akuto saved him from some bullies, Hiroshi ended up becoming fanatically devoted to him as a friend, possibly even more.

[[spoiler:Also, the same raven that proclaimed Akuto was destined to be the next Maou? He later judged Hiroshi to be the next Hero.]]

-->Voiced by: Creator/TsubasaYonaga (JP), Creator/GregAyres (EN)
* [[spoiler:AntiMagic]]
* [[spoiler:{{Badass}}: Once he becomes Brave.]]
* BromanticFoil
* [[spoiler:ClarkKenting: His transparent attempts to not seem like Brave.]]
* [[spoiler:TheChosenOne]]
* [[spoiler:ConflictingLoyalty.]]
* FirstKiss: With his crush.
* HairOfGoldHeartOfGold
* HenshinHero
* [[spoiler:HeroAntagonist.]]
* MrExposition
* [[spoiler:PoweredArmor: He gets one as part of his hero upgrade halfway through the series.]]
* [[spoiler:RescueRomance: With Yuuka.]]
* [[spoiler:SecretIdentity: He's Brave, the next hero.]]
* [[spoiler:TookALevelInBadass]]
* [[spoiler:TookALevelInJerkass: Brave, despite his good intentions, is quite arrogant and he acts like only he knows best and no other does, even though he only recently was given power. He also becomes something of a hypocrite, deciding to do anything for the girl he loves, including helping the BigBad, yet he condemns Akuto for being prepared to do something like kill God for a girl that he [[BalancedHarem possibly loves]].]]

!!Kena Soga

A long time ago, Kena was a fellow orphan in the same church that Akuto was raised in. Akuto apparently helped her out when she was sad. Several years later, they ran into each other at Constantin Magical Academy just as Akuto was trying to apologize to Junko for the day's previous events. Currently, Kena is known for three things: turning invisible, flying, and eating rice in all its forms. She constantly hovers around Akuto, hoping that he'll become the Maou not because she is particularly evil, but because she wants him to succeed as a good friend.

She is rumored to hold the "Law of Identity," which means that if she "forms a contract" with another, that person could gain the power of a God.

-->Voiced by: Creator/AkiToyosaki (JP), Creator/MelissaDavis (EN)
* [[spoiler: ApocalypseMaiden]]
* {{Badass}}:
** BadassAdorable
** BadassPacifist
* BigEater: Especially when her TrademarkFavoriteFood is involved.
* [[CantHoldHisLiquor Can't Hold Her Liquor]]
* {{Cloudcuckoolander}}: Or is it ObfuscatingStupidity?
* FanNickname: Red
* {{Flight}}: Stated to be her specialty
* GenkiGirl: Particularly when the topic is rice.
* InnocentFanserviceGirl: She can become invisible, but it doesn't extend to her clothes so she has to take them off.
* InvisibleStreaker
* [[spoiler: RealityWarper: to some extent, she manages to make everyone forget that Akuta is the demon king so he can live peacefully]].
* RedHeadedHeroine
* TrademarkFavoriteFood: Rice. She thinks that if everyone would just sit down and share some, peace would reign.

!!Fujiko Etou

She's a master of magic and medicine, head of the Academy's Discipline Committee, has her own fan club, and is generally considered one of the school's idols. But this popularity hides a much darker side that was born in part because of her family and in part because of her love for her mostly-dead brother whose head she now keeps in a jar. Fujiko is constantly looking to find a way to control the Maou for her own purposes, though he may be more difficult to handle than she realized.

After Akuto saves her from a dragon, she decides to stop trying to control him and start trying to worship him instead.

-->Voiced by: Creator/ShizukaIto (JP), Creator/ShelleyCaleneBlack (EN, as Eileen Dover)
* ADateWithRosiePalms: In one early scene, Etou is obviously pleasuring herself ''just'' off-screen as she [[{{Fanservice}} lounges around in her underwear]] and [[EvilGloating monologues about her plan to gain control over Akuto]].
* TheBeastmaster: Gets demon beats to obey her, by bribing them with panties.
* BigBrotherWorship: Had this when she was younger, and seems to come back once she learns the truth.
* DarkMagicalGirl
* EvenTheGirlsWantHer: ...and they got her in episode 3.
* EvilSorcerer
* FanNickname: Purple.
* IneffectualSympatheticVillain: Poor Etou-senpai. She ''really'' does try ''so'' hard at it, but falls somewhat short...At least in the anime. In the manga, she's actually a bit more effectual.
* MadScientist: She can create surprisingly potent {{Love Potion}}s at whim and later spent some time creating horrible monsters to impress the Maou.
* ManipulativeBitch
* [[NoblewomansLaugh Noblewoman's Laugh]]
* TheOjou
* SchoolIdol
* [[YouGottaHaveBlueHair You Gotta Have Purple Hair]]


A robot girl known as a "Liladan" (probably written as "L'Isle-Adam", after [[ August Villiers de L'Isle-Adam]], a 19th century french writer thet popularized the term "android") sent to spy on Akuto by the leadership of the Church of Mahct so they could tell whether or not he will really become the Maou. She carries around a [[SwissArmyWeapon multi-purpose gun]] and generally maintains a cool demeanor punctuated with bursts of delightful sexual frankness.

-->Voiced by: Creator/AoiYuuki (JP), Creator/MaggieFlecknoe (EN)
* BadassAdorable
* CombatMedic
* CovertPervert: Just watch the bathroom scenes in the anime.
* DeadpanSnarker: "I'm always cute, thank you very much."
* FanNickname: Trollbot or Green.
* HollywoodCyborg
* LovableSexManiac
* RobotGirl[=/=]RidiculouslyHumanRobot
* TheStoic
* TheTease
* TinMan
* [[YouGottaHaveBlueHair You Gotta Have Green Hair]]


A large, powerful dragon who served the previous Maou but was sealed underneath the school. After Fujiko accidentally releases him, Akuto defeats him in battle and gains the dragon as an ally.

-->Voiced by: Creator/JojiNakata (JP), Andy [=McAvin=] (EN)
* BreathWeapon
* DarkIsNotEvil: He is a black dragon.
* [[DefeatMeansFriendship Fighting to a Draw Means Friendship]]
* [[spoiler: HeroicSacrifice.]]
* LoopholeAbuse: There is no rule stating that one can't keep a dragon in school.
* OddFriendship: With Kena
* OurDragonsAreDifferent
* ThisIsADrill: Best BreathWeapon ever? Best BreathWeapon ever!

!Student Council
!!Lily Shiraishi

President of the Student Council, she wears a very expressive witch's hat and talks with a slight lisp. Along with monitoring the school behind the scenes, one of her duties appears to have been safeguarding ancient ruins that contain items of interest to the Maou, but whether she's trying to protect Akuto from the school or the school from Akuto is up for debate.

-->Voiced by: Creator/RyoHirohashi (JP), Creator/HilaryHaag (EN)
* ActionGirl
* [[spoiler:BigDamnHeroes: In the finale.]]
* BareFistedMonk: Her main fighting style.
* {{Bokukko}}: She uses the ''masculine'' personal pronoun of "Boku."
* CallingYourAttacks: Ultimate Technique: ''The Throw''!
* CuteLittleFangs:
* FanNickname: Yellow
* JerkWithaHeartofGold
* NiceHat
* RapidFireFisticuffs
* ShoutOut: Her hat seems to look similar to the Sorting Hat from ''Film/HarryPotter''.
** But a lot more similar to Uma's hat in Renkin San-kyuu Magical Pokaan.
* ManipulativeBitch
* RubberMan
* StudentCouncilPresident

!!Michie Otake

Vice President

-->Voiced by: Creator/AyanaTaketatsu (JP), Creator/ShannonEmerick (EN)
* BadassAdorable
* OurVampiresAreDifferent: Thanks to her small amount of screentime, the most she shows of her vampirism is turning into and attack with bats.
* VerbalTic: ends most of her sentences with "issu".

!!Kanna Kamiyana

Treasurer. Werewolf.

-->Voiced by: Creator/KaoruMizuhara (JP), Creator/BrittneyKarbowski (EN)
* OurWerewolvesAreDifferent
* VerbalTic: ends most of her sentences with "gya".


Secretary who only speaks with a "guga" VerbalTic. A Liradan (L'Isle-Adam) like Korone, but of a different model. She also has her own mech.

->Voiced by: Creator/MinakoKotobuki (JP), Margaret Fawcett (EN)
* RobotGirl
* VerbalTic: "Guga". Also a form of PokemonSpeak. Korone is able to translate it. [spoiler:As of the 2nd volume of the light novel, the only time she has appeared she seems to talk normally.]

!Cabinet Intelligence Magick Office, "[=CIMO8=]"
!!Yamato Bouichirou

The rumored head of [=CIMO8=] with a magical sword power that can cut through anything, including ''dimensions''. He has been working behind the scenes to try and neutralize the Maou before he became too powerful.

According to the anime, he is actually a time-traveler who lost his lover to the original Maou, and somehow traveled to the present to stop the current Maou, Akuto, from gaining the same powers. However, when he discovers the reincarnation of his lost love in the body of Kena Soga, he instead decided to inherit the power of a God with Kena's "Law of Identity".

-->Voiced by: Tarusuke Shingaki (JP), Leraldo Anzuldua (EN)
* BigBad
* GoodIsNotNice
* HeroAntagonist: In the novels, this aspect of him is constantly emphasized. Despite some of the unsavory things he does for humanity, he is fundamentally a very good person at heart. Even ''Akuto'' refers to him as the incarnation of goodness, and Teruya Keizo calls him a fundamentally good person even after Bouichirou ''slices him in half''.
* ImplausibleFencingPowers
* LoveMakesYouEvil: Subverted, purely by virtue of the fact that Bouichirou isn't really evil. However, his main motivation in his quest is his love for one of the previous Laws of Identity.
* LightIsGood: See HeroAntagonist
* OlderThanTheyLook: Yamato apparently fought the previous Maou along with the old man currently serving as Headmaster of the Academy
* RageAgainstTheHeavens
* WellIntentionedExtremist: After seeing his motive for doing the things he does, you can hardly blame him...not that it justifies his actions any.

!!Eiko Teruya

A mysterious green-haired girl who freelances as a spy for [=CIMO8=]. She has a rivalry with Junko that stretches back between their families, both of which have been [[VideoGame/Left4Dead jockey]]ing for position under the God Suhara. Eiko is willing to do anything to gain more power, from seducing the potential Maou to backstabbing members of her own clan.

-->Voiced by: Creator/HarukaTomatsu (JP), Stephanie Wittels (EN)
* GeneralFailure: According to 2V, she's not really a very skilled military commander.
* ManipulativeBitch
* [[spoiler:SelfMadeOrphan]]: [[spoiler:Kills her father in order to become the high priest.]]
* ShesGotLegs
* RapunzelHair
* TheRival[=/=]EvilCounterpart: To Junko
* TheVamp: Openly and proudly flaunts the fact that she's ''not'' a virgin, constantly teasing Junko about the fact that the latter is one; not to mention her first solution to every problem with a guy is "will you sleep with me?"
* VillainousBreakdown: Once she sees [[spoiler:her father alive again]]...
* YouKillItYouBoughtIt: She became a high priest of Suhara in Episode 10 and held power over all the Suhara ninjas [[spoiler:at least until her father came back from the dead]].

!!Mister X

An odd agent from [=CIMO8=] who seems obsessed with the "artistic" side of everything. Uses sound-based magic to nullify the mana-based powers of other mages, and seeks to rekindle the great war against the Maou just because he can.

-->Voiced by: Haruo Satou (JP)
* DirtyOldMan
* ForTheEvulz
* LargeHam
* MusicalAssassin


Another agent of [=CIMO8=] who seems rather well-adjusted compared to the others, as he is shown in a professional suit and tie during his debut. He has the ability to control human-looking puppets remotely with his magic, and thus no one knows his true face. [[spoiler:It is revealed in Volume 6 that [[SamusIsAGirl "he" is actually a girl]] who appears to be around ten years old.]]

-->Voiced by: Tomoyuki Higuchi (JP)
* BitchInSheepsClothing: Looks nice, but he's actually a condescending asshole.
* MarionetteMaster
* [[spoiler:SamusIsAGirl]]

!Other Characters
!!Fujiko's Older Brother

A magical KnightTemplar who lost his life during one expedition after being tricked by Bouichirou. It was [[ThePlan a plan]] to lead the potential Maou into a trap that would kill him. He currently exists as a BrainInAJar after his sister magically reanimated his head.

-->Voiced by: Creator/KosukeToriumi (JP), Creator/BlakeShepard (EN)

* AdventurerArchaeologist:
* BackFromTheDead: Well, his head anyway. Etou does this to try and discover what secret he found out during his last treasure hunt. Unfortunately...
* DarkisNotEvil: Was a dark mage trying to prove that they could be good.
* LaserGuidedAmnesia: He does this to himself after he discovers a treasure whose secret is too horrible to reveal. It causes his death at the hands of his employer
* OracularHead: His head can still communicate, although it doesn't remember much...

!!Mitsuko Torii

Akuto's teacher who seems to be a bit too interested in studying him, dead or alive.

-->Voiced by: Creator/ChiakiTakahashi (JP), Rozie Curtis (EN)
* HotTeacher
* RunningGag: Her willingness to dissect Akuto.

!!Yuuko Hattori

A popular TV idol under the stage name Yuri Hoshino, Yuuko also happens to be a Suharaist ninja and the younger sister of Junko. On top of that, she happens to have a little demon blood in her after an accident with a monster during her childhood, and can sense when there are monsters nearby. However, Akuto's presence has caused the demon blood within Yuuko to make her a bit crazier than normal...

-->Voiced by: Creator/YukaIguchi (JP)
* CursedWithAwesome: When she was younger, she was bitten by a monster. As a result, she can detect when they're nearby. However, it's unslightly and will eventually kill her, unless it can be removed...
* CuteAndPsycho: She seems a bit too happy to jump into battle and kill monsters.
* IdolSinger
* KnightTemplar
* {{Ninja}}
* TooDumbToLive: She accepts a suicide mission from [[spoiler:Eiko Teruya]] as part of the latter's UriahGambit, thinking that she wouldn't be in much danger because she would be able to take down hundreds of demon beasts on her own, and all in all treating the whole thing like a chance to get extra publicity. [[spoiler:If Brave hadn't shown up to take out most of the demon beasts, she wouldn't have lasted a minute.]]

!![[spoiler:The God, Suhara]]

* [[spoiler:BiggerBad]]
* [[spoiler:GodIsEvil]]