Beelzebub/TropesAToC | Beelzebub/TropesDToL | Beelzebub/TropesMToR | '''Tropes S-Z'''
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!!!''Manga/{{Beelzebub}}'' provides examples of the following tropes:

[[foldercontrol]]

[[folder:S]]
* SadisticChoice: Ringo gives one to Aoi, after taking both her Red Tail gang and Oga [[spoiler:actually Beel in Oga's body]] hostage: either fight one of the Red Tails to get Oga to be released, or fight Oga to free the Red Tails.
%%* SanityBall: All over the place.
* {{Sarashi}}: Notably Aoi, and various other background {{delinquent}} characters.
* SayItWithHearts: Nasubi often does this, sometimes throwing in stars as well.
* SayMyName:
** Chapter 207: [[spoiler:FURUICHIIIIIIIIII]]
** Chapter 221: [[spoiler:[[FirstNameBasis TAKAYUKIIIIIIIII]] FURUICHIIIIIIIIII]]
** Practically everyone during the reunion scene in Chapter 225, much to Oga's displeasure.
--->'''Oga:''' [[BigShutUp SHUT THE]] [[LampshadeHanging HELL UP!]]
* ScareChord: In the anime, when Shimokawa sees Oga dressed as a nurse and wearing a particularly disturbing SlasherSmile. "Welcome, good patient!" indeed.
* ScaryBlackMan: J.J. Elric, a towering, muscle-bound, apparently American cage fighter at San Marx who challenges Oga.
-->'''J.J.:''' You bastard! Eat my shit!
* ScaryShinyGlasses: Izuma, nearly all the time. Also Behemoth when his true nature is revealed.
* SchoolUniformsAreTheNewBlack: On the school field trip, all the Ishiyama girls wear casual clothes, but for some reason the boys (except Tojo) wear their uniforms.
* ScreamingWarrior:
** Oga during his rematch with [[spoiler:the Behemoth Pillar Squad]].
** The climax of Oga and [[spoiler:Takamiya's]] fight.
* ScrewTheRulesIHaveMoney:
** Himekawa is ridiculously rich, and firmly believes that EveryManHasHisPrice. This actually becomes a major plot point in the Behemoth arc where he is able to use his influence to rent out whole office complexes and turn them into gaming rooms.
** The San Marx arc revealed that he had actually bought the gaming rooms previously, using the winnings from betting on online gaming matches.
** During the FPS battle, when it seems that Lord En is going to win due to his [[ScrewTheRulesIHaveSupernaturalPowers servants cheating with demonic power]], Himekawa does something that goes beyond cheating: [[ScrewTheRulesIMakeThem he buys the game so he can have whatever changes he wants made to it.]]
--->'''Himekawa:''' I had to blow some pocket money.
* ScrewThisImOuttaHere:
** In Chapter 140, Furuichi hightails it out of the brewing conflict between Hilda and Aoi after complaining about the way things are developing and [[LampshadeHanging how Oga always gets the 'juicy parts']].
--->'''Oga:''' [[LampshadeHanging Why are you the one that's running?]]
** Chapter 151 has Beel fleeing from Chiyo and Futaba's little spat to go cry into Oga's chest.
--->'''Oga:''' What the hell are you doing? You're pathetic.
** Izuma bails out of the Best Couple Grand Prix in Chapter 184, due to a combination of Shizuka being eliminated earlier on in the tournament and not wanting to fight Oga.
** Himekawa refuses to team up with the other delinquents in order to fight the upstarts, instead preferring to try his luck on his own, [[spoiler:and later ditches the gang entirely to join forces with Takamiya.]]
* SecretlyWealthy: Utterly averted with Himekawa, who openly flaunts his wealth at every opportunity. Though it's played straight with [[spoiler: Nene]], whose family makes enough money to be able to afford a lavish house in a gated community.
* SelectiveObliviousness: When Tojo is told that he's been fighting against demons, he just agrees that "those guys were strong as demons". He also doesn't question Baby Beel's origins on account of him being cute, nor [[spoiler:Akuma Academy's construction]] since he got paid well for the job.
* SeriousBusiness: Volleyball.
** And park debuts.
** And online {{FPS}} games.
** And skipping stones. [[MundaneFantastic Like a work of art!]]
** And [[ClassTrip field trips]]. According to Mr Saotome, anyway.
** And buying souvenirs. For Tojo at least.
** And tennis.
** And UNO. It decides ''everything''.
** So does Sudoku!
* SesquipedalianLoquaciousness: Used in an omake where Hilda's voiceover talks about "extenuating circumstances", causing Idiot #1 (Oga) and Idiot #2 (Furuichi) to ask what that is.
* SexySantaDress: Aoi and Hilda wear these on the cover of Chapter 181.
* SexySoakedShirt: Shortly after finding the Demon's Portrait, Himekawa manages to set his hair on fire. Putting it out causes his hair to fall out of his pompadour, causing Furuichi to nickname him 'Sexykawa'.
* [[SheIsNotMyGirlfriend She Is Not My Wife]]: Oga and Hilda. To the point where when Kazuya called her that neither of them even bothered to correct him.
** Though Oga says these exact words when Tojo implies this is why [[spoiler:[[ShipTease he's out to rescue her]]]] in Chapter 133.
** Hilda [[spoiler:actually believing they're married after she [[IdentityAmnesia loses her memories]]]] causes Oga to suffer a massive FreakOut.
** This is Mr. Saotome's stance on his relationship with Suiten. Though he's usually in for a world of pain if he vocalizes those feelings.
** Kanzaki very firmly believes this about him and Yuka. His yakuza underlings, however, [[ShipperOnDeck think differently]].
* ShipperOnDeck: Chiaki seems to ship Oga and Aoi. However the other Red Tails are very keen to know about Oga's relationship with Hilda but they still try to set up time between Oga and Aoi once in a while.
** Kanzaki's underlings ship him and Yuka very firmly, much to his horror.
* ShipTease: Quite rampant throughout the entire series. There's Oga/Hilda and Oga/Kunieda for the mains, Furuichi/Nene and Furuichi/Lamia as seconds. Lamia's mom even stated it outright in an extra chapter. Izuma tries to ship himself with Shizuka, but despite being on the level intellectually, she's firmly in Tojo's camp.
** The Best Couple Grand Prix arc is packed with this. Couples included Oga/Hilda, Kanzaki/Yuka, Tojo/Shizuka, Mr. Saotome/Suiten, Furuichi/Nene.
* ShockAndAwe: Baby Beel's power to electrocute people when he's angry or upset, which is by extension Oga's as well.
* ShouldntWeBeInSchoolRightNow:
** Pretty much the entire Ishiyama group skip school, either because they're training in the mountains or playing video games against a Demon Lord. Their excuse is that they all had relatives who died. Apart from Aoi, who was [[PlayingSick hospitalized for acute gastroenteritis]].
--->'''Aoi:''' What the hell is that?
** And Tōjō, who's always out on one of his part-time jobs ''during class hours''.
* ShoutOut: Has its own [[ShoutOut/{{Beelzebub}} page]].
* ShowerScene:
** Oga gets one eventually, though it's only from the waist up and is kinda spoiled by the fact that Shiroyama is standing outside the window. In the anime he gets a FuroScene in the second episode.
** Furuichi gets an anime FuroScene too, but it is treated as FanDisservice due to him being the resident ButtMonkey.
** In chapter 222, [[MsFanservice Nene]] is taking a shower at her house while one of the split up mini forms of Furuichi is hiding in the bathroom [[EatingTheEyeCandy watching]] her SexySilhouette from a distance. When Nene walks out of the shower, it's [[CensorSteam steamy and she looks as if she is completely naked]] while drying herself off with a ModestyTowel (Furuichi makes a 4th wall breaking comment asking if the CensorSteam is going to be removed when this chapter gets printed in the volumes). She then reveals to him that she knew he was going to try to peek and the steam clears up to show that she was actually [[NonNudeBathing showering in a bikini]]. But he says that it still doesn't matter to him because it still gets him off.
* ShowWithinAShow: The popular children's superhero franchise ''Rice Boy''.
* ShutUpAndSaveMe: Inverted.
-->'''Oga:''' I'm here to rescue you, dumbass! Now shut up and let me save you!
* SickEpisode: Sick ''arc''. Although the aim is to discover why he's sick.
* TheSilentBob: Several characters, particularly Oga, have shown the ability to interpret Baby Beel's wordless gurgling. Or maybe he has very expressive eyebrows. Or they're just making it up.
* SillyMeGesture: Yuka does this after finding and subsequently losing the group's {{game|Breaker}}breaking [[HumongousMecha "Crazy Frog" mecha]] while playing ''[[SeriousBusiness End Of War 4]]''.
* SimilarSquad: The Field Trip arc introduces one for Ishiyama High. South Chinpira High created their own Tohoshinki modeled after Ishiyama and even have an Oga clone, Izo Aiba, who's just a bit less of a CloudCuckooLander and just as much of a badass. The main difference so far? Well, he's blond and falls in LoveAtFirstSight with Kunieda... and his baby sister falls for Beel...at first sight..
* SlasherSmile: Oga, oh God, Oga. The faces he makes can be seen as the ''definition'' of a slasher smile.
** Pillar Head [[PerpetualSmiler Salamander]] seems to be getting in on the action as well.
** Jabberwock is usually frowning, but gets one of these when he's really enjoying a fight.
* SleepCute: Hilda snuggled up to Beel in Chapter 139 [[spoiler:after getting into bed with Oga]].
** Chapter 141 gives us one with Hilda and Yolda.
* SleepModeSize: Koma's goofy little monkey form. [[spoiler:His true form is a hulking lion-dog twice the height of a grown man.]]
* SlobsVersusSnobs: Happens when the delinquents transfer from Ishiyama High, the worst InnerCitySchool around, to the much posher St. Ishiyama. Then Oga infiltrates the ridiculously wealthy San Marx Private Arts Academy, whose students consist of children of big league politicians and foreign princes.
* SmokingIsCool: Saotome-sensei smokes almost constantly, and is undeniably the most badass character introduced so far.
** Arguably Basilisk, with his ever-present cigar and ten foot battleaxe.
** Ringo tries to invoke this. [[CurbStompBattle She fails miserably.]]
* TheSmurfettePrinciple: Both Aoi and Shizuka are the only female members of the Tohoshinki and Six Knights respectively.
* SneezeCut: Oga is cut to several times when other characters are talking about him, complete with the "I must be getting a cold" line.
* SpannerInTheWorks: Oga's decision to [[spoiler:let Beel return to the Demon World]] firebombs the plans of the [[spoiler:Solomon Company]] into oblivion.
* SparklingStreamOfTears: Furuichi, after he realizes that he has no one to enter the Best Couple Grand Prix with.
* SplitScreenReaction: All over the place during the anime version of the [[SeriousBusiness volleyball duel]].
* SpoiledBrat: Kanzaki's niece [[EnfantTerrible Futaba]]. En as well, combined with a generous helping of RoyalBrat.
* StalkerWithACrush: Good Night Shimokawa, on Aoi.
** Alaindelon seems to be developing into one for Furuichi, even following him as far as Okinawa and acting like a housewife. The below trope certainly doesn't help.
* StealthHiBye: Alaindelon has this in spades, being a dimensional transfer demon. No one ever seems happy when he turns up either.
* TheStoic: Jinno acts extremely mellow about everything, and Chiaki only had one or two facial expressions at first. She's been succeeded by Laymia.
* StrangeMindsThinkAlike: In Chapter 140 both Furuichi and later Aoi ask if a 'wife' is "[[DontExplainTheJoke that red liquid the French are well known for]]". Furuichi lampshades this by telling Aoi to calm down, since he already asked the same thing.
* {{Stripperiffic}}: Aoi's Red Tail uniform that bared almost her entire torso. And then we have Satura, who wears a bikini and an apron.
** [[PantyFighter Pillar Agiel]] probably takes the cake, with her outfit consisting of only underwear and the Pillar Squad's mandatory badass long coat.
** [[spoiler: Aoi's]] school uniform is transformed into a "more flashy" BDSM outfit during a kids' show taken over by Behemoth.
* StrongFamilyResemblance: Furuichi and Nene to their respective moms, as well as Lamia and [[spoiler:Laymia]]. [[spoiler: Hilda and Yolda, of the sisterly variety.]]
* SuperCellReception: In Chapter 166, Hilda's cell phone is shown to be so good it can place a call while several stories underground, a fact which is heavily lampshaded.
* SuperMode: Just when you thought Oga couldn't get any ''more'' powerful, [[LimitBreak he goes and breaks the contract bounds he has with Beel]] and activates [[spoiler: Super Milk Time]]. [[HourOfPower Too bad it has a time limit...]]
** Kanzaki apparently gets three times as powerful when he gets mad at someone pulling on [[BuffySpeak his facial piercing...chain...thing]].
* SuperWindowJump: Tojo and Natsume get into the principal's office this way during [[FunWithAcronyms Operation P.I.E.S]]. Not like they had any reason to smash it though.
** In Chapter 216, this is how [[spoiler:Kanzaki]] starts off his BigDamnHeroes moment.
* SuperSenses: [[spoiler: Hilda's]] left eye is revealed to be much more visually sensitive than her right, allowing her to read opponents' moves with ease. She usually keeps it covered though, as the huge sight difference between the two makes her nauseous.
* SuplexFinisher: Oga uses this against Tojo during their second fight at Ishiyama [[spoiler: and wins]].
* SurprisinglyRealisticOutcome:
** After getting Tojo to throw him into the air so he can perform an epic kick in a ''volleyball'' match Oga gets a foul called.
--->'''Referee:''' Foul. Of course it's a foul. Idiots.
** The reasons that prevent the delinquents from coming on the St. Ishiyama {{field trip}}. Putting aside the fact that they [[AlwaysInClassOne aren't even in the same grade]], they also aren't official members of the school and have no money to pay their way, since Himekawa [[HandWave can't be bothered to foot the bill]].
---> '''Kanzaki:''' [[LampshadeHanging He's making a lot of sense...]]
** In her first Best Couple Grand Prix event, Yuka drinks an entire bottle of highly carbonated drink in one go. She's then carted off to the infirmary with stomach pains shortly after.
** A character example with Furuichi: After being the ButtMonkey and TheChewToy with his misfortunes being PlayedForLaughs, he ends up getting Demonic Tissues, allowing him to temporarily gain the powers of the Pillar Squad. He uses them to fight and ends up facing off against his best friend, the protagonist himself. Not only is it revealed that continued use could kill him, he was fully aware of it from the first time; to him, though, being mocked and ridiculed by his friends was no better than being dead. Fact of the matter is that he was a StepfordSmiler throughout all of this, while struggling with low self-esteem and suppressed anger towards his friends.
* SurrealThemeTune: The opening song "Dadada!". It would be impossible to know what was going on at all if the animation wasn't vaguely related to the lyrics.
** And now End Theme 4 "Papepipu♪ Papipepu♪ Papepipupo♪". "Grugrugrugrugrugrugrugrugru... DON'T TOUCH ME!" Indeed.
* TheSymbiote: Baby Beel actually is like this. He needs a human parent in order to channel and develop his powers, while at the same time giving superhuman powers to his host/parent.
* {{Synchronization}}: This happens to [[spoiler: Oga and Beel]] when [[SuperMode Super Milk Time]] is activated, turning [[spoiler:Oga]] into a literal ManChild.
[[/folder]]

[[folder:T]]
* TakingTheBullet: [[spoiler: Lucifer for Takamiya]] in Chapter 220.
* TalkToTheFist: Pretty much the only way Oga knows how to communicate. Tojo is just as bad.
* TanLines: A running gag in the anime is that Oga always gets incredibly awkward Beel-shaped ones.
* TearsOfRemorse: Both Lamia and Alaindelon do this in Chapter 221, after they think that [[spoiler:it's [[YouAreTooLate too late]] to save Furuichi]].
* TeenageWasteland: Gangs of teenage thugs roam the streets day and night and the underground network is made up mainly of young people. Ishiyama High takes this to the extreme.
* TeleporterAccident: While Doctor Awesome is successfully dropped off at the Demon King's palace, Alaindelon makes a mistake and [[spoiler:Lamia, Oga, and Furuichi]] are instead taken to the wildest, most dangerous area of the Demon World where they are stranded until help comes. And there are monsters ''everywhere''. Huh.
* TemptingFate: All over the place.
** The Chinpa Mooks in Chapter 152 really take the cake.
--->'''Chinpa Mook:''' [''to a captured Yuka''] We're on a private roof of the penthouse suite! No one's gonna come save you this time!\\
[''cut to [[BigDamnHeroes Himekawa]] standing right there'']\\
'''Himekawa:''' What are you people doing on my roof?
** There's no way that a toy from the demon world would just conveniently arrive. [[DiabolusExNihilo Right?]]
** In Chapter 184, Kanzaki and Yuka theorize that they'll probably win against Izuma and Aoi so long as they aren't in a head on battle. Guess what their semi-final challenge is.
** In Chapter 217, one of Takamiya's spellmasters mentions that the collected power from Beel, which is stored in their power sealing machine, will be trouble for Takamiya should it be released. [[spoiler:This sets the stage nicely for [[FakeDefector Himekawa]] to break said machine.]]
* TenderTears: Oga's family are moved to tears several times in the space of one chapter when Hilda [[spoiler:loses her memories]] and begins acting very polite and endearing.
** This is Shizuka's MO during her and Tojo's Best Couple Grand Prix match in Chapter 182. It nets her perfect scores from the judges every time.
* ThatCameOutWrong:
** Thanks to Oga, his training match with Aoi is packed full of this.
--->'''Oga:''' [''at the start of the fight''] I've always wanted to do it with you...\\
'''Oga:''' [''after trapping Aoi's hand''] But now I'll never let you go..."
** Aoi even {{lampshade|Hanging}}s it (after the obligatory LuminescentBlush).
---> '''Aoi:''' I know what he means, but couldn't he have said it differently?
** There's also Behemoth's request for Hilda's tits...when he really just wants her to be En's new wet nurse.
** [[spoiler:Strategist]] Furuichi backpedals this way when the other [[spoiler:parts of his soul]] pick up on all the [[StealthInsult hidden insults]] that riddle his seemingly heartfelt speech.
--->'''Furuichi:''' No, wait! That came out wrong. [[DiggingYourselfDeeper What I meant to say was...]]
* ThemeMusicPowerUp: Episode 55. Because you just know things are about to go down when [[MundaneMadeAwesome Himekawa does his hair and busts out the stun baton]].
* ThemeNaming: In Behemoth's Pillar Squad, the Pillar Heads are named after legendary dragons, whereas the Pillars themselves are named for the letters of the Alphabet of Angels.
* ThereIsNoKillLikeOverkill: Most of Oga's opponents end up buried waist-deep in concrete. Sometimes in the floor, sometimes the ''ceiling''. And occasionally the walls.
** Oga takes this to new heights by applying it to a skipping stone competition, using demonic power and his insane strength to beat a small child.
** Did he really need to slam [[CreepyCrossdresser Miwa]]'s face into the roof ''that'' many times?
** [[BewareTheNiceOnes Natsume]] slams four of the MK-5 head-deep into the toilets.
* ThereWasADoor: When he takes on Akuma Academy, Oga enters the place by smashing a hole in the wall. When the enemy calls him out on this, he reveals that he got tired of searching for the door.
** Oga does this a lot in the Upstart arc. It's a miracle that Ishiyama has any doors left.
--->'''Nasubi:''' [[LampshadeHanging ...Making that sort of entrance again?]]
* ThinkerPose: There's a statue of En doing this in the Akuma Academy grounds.
-->'''Kanzaki:''' [[ComicallyMissingThePoint You can bet your life he's NOT thinking!]]
* ThoseTwoGuys: Natsume and Shiroyama (at first), Nene and Chiaki (at first), Aizawa and Jinno, Ryoko and Kaoru.
* TigerVersusDragon: ''Tatsu''mi Oga and Hide''tora'' Tojo are represented by a dragon (tatsu) and a tiger (tora) respectively.
* ToiletHumour: Baby Beel's urination period. Later, the focus gets shifted to Furuichi, seeing as in St. Ishiyama arc he was abducted by Alaindelon while sitting on the toilet [[ButtMonkey (without having a chance to wipe his ass first)]], while the Okinawa arc has him suffer from a bout of diarrhea and therefore [[ButtMonkey miss the chance to go into Aoi's room or spy on the girls comparing breast size in the hot spring]].
** During the Best Couple Grand Prix, the word Nene has to somehow mime to Furuichi is 'poop'. Cue minor FreakOut.
** All the bad guys in the Rice Boy Hero Show are toilet themed names like Baron Von Poop.
* TookALevelInBadass: In Chapter 169, [[NonActionGuy Furuichi]] becomes strong enough to take down the likes of Oga and Miki, thanks to the power given to him by the Demon Lord's tissues. The era of Furuichi has come indeed...
** Anyone who receives the [[spoiler:King's Crest]]. So far it's given [[spoiler:Kanzaki and Aoi]] the power to completely turn the tables in their fights against the Upstarts, and boosted [[spoiler:Himekawa's]] levels to the point where he can fight and defeat [[spoiler:''Tojo'']].
* TournamentArc:
** The Best Couple Grand Prix is a spoof of one, consisting of a wild range of zany romantic themed challenges. Of course, the Ishiyama crew manage to work violence in anyway.
** Later chapters have it revert to the traditional beat-them-up format, much to the audience's confusion.
---> '''Random Audience Member:''' [[LampshadeHanging Maybe they've run out of material?]]
** Akumano Academy too. We're told by En and his supporters that it will be an epic one of these for the Ishiyama students to reclaim their school. Oga decodes to show up the night before and beat almost all of them on his own very quickly (and the others are only needed for one puzzle/lock challenge). It's ''hilarous''.
* ToxicPhlebotinum: The [[spoiler:tissues]] which [[spoiler:Furuichi]] uses to summon the power of other demons contain toxins that slowly kill humans. [[spoiler:Furuichi]] begins to experience side-effects in the form of hallucinations. Thankfully seems to not work as poorly the second time he uses them. To be fair, he used less.
* TrainingFromHell: Oga's "training" of Beelzebub in Chapters 39 and 40. To get rid of his fear of bugs.
** Grandpa Kunieda forces his students to break rocks with their bare hands as training. And they don't eat until they succeed.
** Saotome's training involves jogging round the mountains doing stretches while he chants some weird made-up song about punching people. Subverted as Oga only finds it complete hell because of how stupid it is.
** Tojo proudly boasts to one of Takamiya's mooks about how he trained so hard that he vomited blood. Sounds good and all, [[SubvertedTrope until you realize]] that said training was in [[SeriousBusiness tennis]].
* TrainStationGoodbye: Though it's more of an Airport Goodbye, this happens with Izo and Aoi in Chapter 155. In a small lampshade to how {{shoujo|Demographic}} the whole thing is, Aoi is [[ArtShift briefly drawn in a softer art style]] during her final line.
* TransferableMemory: The thing that finally convinces the [[spoiler:separate parts of Furuichi's soul]] to [[spoiler:be united in a single body]] is the fact that, if they do so, they'll all be able to view the memory of [[MsFanservice Nene]] in a bikini.
* TransformationSequence:
** Parodied in Episode 6 of the anime, when demon toys transform baby Beelzebub into a doctor and Oga and Furuichi into his nurse assistants.
** Played straight in Episode 27. Angelica's [[TransformationTrinket Demon Sparkling]] [[ExactlyWhatItSaysOnTheTin Transformation Wand]] turns herself, Hilda, Azusa, Furuichi's kid sister and Aoi into [[MagicalGirl magical girls]].
** Parodied again in Episode 55, which shows an extremely detailed sequence of... [[MundaneMadeAwesome Himekawa fixing his hair]]. Not to mention the way he pulls out his stun baton is a mirror image of how a {{magical girl}} would pull out her staff.
* TrappedInAnotherWorld: When [[spoiler:Oga and Furuichi]] are pulled into the Demon World by Alaindelon. They get back, eventually.
* TroublingUnchildlikeBehavior:
** Futaba and Chiyo's argument over Beel.
--->'''Futaba:''' You rotten bitch, don't go seducing my Beel!\\
'''Chiyo:''' My, what dirty language! You too, calling him your "lackey". Is something wrong with your head?\\
'''Furuichi:''' [[LampshadeHanging This doesn't seem like a conversation between four year olds...]]
** Himekawa was an extremely early bloomer, being an avid reader of the Financial Times, having a potty mouth, and being perfectly willing to bribe people to get his way while in kindergarten.
--->'''Furuichi:''' [[LampshadeHanging There's something wrong here no matter how you look at it!]]
* TrueCompanions: The delinquents are very, very, [[RuleOfThree very]] slowly becoming this.
-->'''Aoi:''' Don't they...\\
'''Oga:''' ...seem kinda close?
* TrueLovesKiss:
** The only thing that can reverse Salamander's memory erasing flames is a kiss from Prince Charming. Salamander lampshades that this is the way problems are solved no matter the era. [[spoiler: Hilda's prince is Beelzebub, apparently.]]
--->'''Salamander:''' The market value will never drop!
** As Chapter 176 shows, it's less that the kiss completely cures a person, and more like the kiss [[spoiler:just switches the person's personalities around. A pre-memory loss Hilda will switch to her post-memory loss personality if kissed by Baby Beel, and will revert back to her pre-memory loss personality if kissed again.]]
* {{Tsundere}}: Aoi Kunieda sways between Type A and Type B.
** Furuichi seems to think Lamia's one.
** Natsume called Kanzaki this in one of the earlier episodes.
** Hilda doesn't show her warm side very often, but WhenSheSmiles...
* TwinSwitch: Although they aren't exactly twins [[spoiler:sisters Hilda and Yolda look [[StrongFamilyResemblance similar enough]] to successfully switch places in the Akuma Academy dungeons, which gives Yolda a chance to escape.]]
* TwoTeacherSchool: Ishiyama High [[spoiler:before Oga destroys it]] is actually a ''no-teacher'' school (except for the lunch lady and the principal/janitor). With a [[{{JapaneseDelinquents}} delinquency]] rate of 120%, what do you expect? Lampshaded by Furuichi in the anime.
-->'''Furuichi:''' You know I've been wondering this for a while, but what do the teachers in the school actually do?
[[/folder]]

[[folder:U]]
%%* TheUglyGuysHotDaughter: Alaindelon's daughter Angelica.
* UndyingLoyalty: Hilda has this towards Baby Beel. [[spoiler:It's implied she also felt this way towards his mother, Lady Iris.]]
** [[spoiler:The entire concept of a King's Crest revolves around this. Each of the Tohoshinki bear Beel's King's Crest because, no matter how much they would hate to say it to his face, they all see Oga as their boss.]]
* UnfazedEveryman: Furuichi becomes this after he gives up and just accepts any weird demon-related mess he gets thrown into. Cue MistakenForBadass.
* UnflinchingWalk: Oga and Beel have an EPIC one after [[CurbStompBattle handing out some serious ass kicking to the Pillar Squad]]. Complete with HiddenEyes for added dramatic effect!
* UnknownRival: Aiba sees Oga as a rival for Aoi's affections. Oga being Oga is not only totally uninterested, but hasn't even realized that Aiba thinks he's this.
* UnlimitedWardrobe: When not at school, the cast are always shown wearing different casual clothes, some of which are pretty detailed. The covers also have them in a variety of fancy outfits.
* TheUnreveal: When Oga gets a video message from the Demon King, he's anticipating the chance to finally see his face. Those hopes are shot down once he actually plays the message, as all he gets is a crotch shot.
* UnsympatheticComedyProtagonist: Oga's redeeming personality traits number in the single figures but his situation is hilarious. Heck, Furuichi, Hilda, and Tojo probably count as well.
* UnusualEars: Some demons have webbed gills in place of ears.
* UnwantedHarem: Furuichi is doing everything in his power to prevent Oga from gaining one because "It just isn't fair".
* UnwittingPawn: Both Oga's gang and the Upstarts are apparently this for the [[spoiler:Solomon Company]], according to their [[spoiler:main agent]]. It remains to be seen how much of this claim is true, and how much is simply villainous posturing.
[[/folder]]

[[folder:V]]
* VerbalTic: Yuka has a habit of saying "paa-ne", which earns her the nicknames Paa-ko and Paa-nazawa.
* VillainousHarlequin: Pillar Head Quetzalcoatl's makeup and hat resemble this, and due to his calm personality he's not quite a MonsterClown. Not yet.
* ViolenceIsTheOnlyOption: ''The only option ever considered'' by 90% of the cast.
* VitriolicBestBuds: Oga and Furuichi would gladly put each other in danger to save themselves, but they're never apart and always end up sticking together. This is reinforced when they fight each other and Oga reveals how much he respects his only friend.
* VolleyingInsults: The {{delinquent}} characters do this all the time, often calling everyone an idiot and ending sentences with things like "you bastard" or "I'll kill you".
[[/folder]]

[[folder:W]]
* WeaksauceWeakness: Himekawa's power halves if his hair isn't in his iconic pompadour, which makes him extremely weak when in his {{Bishonen}} mode.
* WebcomicTime: Lampshaded in Chapter 147, when Oga [[BreakingTheFourthWall talks about having only been Beel's father for around six months despite it being the series' three year anniversary]]. Then Misaki invokes TonightSomeoneDies for some reason.
** The narration in Chapter 176 lampshades this as well, since it needs to deliberately state that the current chapter is set during December.
* WeDoNotKnowEachOther: [[spoiler:Tojo and Shizuka]], probably because of them going to very different schools.
* WeirdnessCensor: Oga's family never seems to comment on why Baby Beel can produce powerful electric shocks when he cries. Or why Oga's room frequently explodes. Or all the weird uninvited guests that keep turning up.
** After Tojo got into a fight with a demon, Saotome tried to explain the situation to him. However [[{{Cloudcuckoolander}} Tojo]] [[ComicallyMissingThePoint completely misses the point]], and persistently just agrees, "yeah, that guy fought like a demon" when Saotome is trying to flat-out tell him "No, he actually ''was'' a demon!"
** Played with when En has the Akuma Academy built as a base for his forces and they hire Mr. Takahashi, a regular teacher, to teach them about the human world. He ''does'' notice the many, many things that are wrong with his "class", but is too freaked out [[BystanderSyndrome and needs the job too badly]] to make the necessary mental leap to acknowledge that they're demons.
* WesternZodiac: The [[spoiler:Solomon Company agents]] have demons that follow this theme.
* WhamLine:
** One is dropped when the gang return to the newly rebuilt Ishiyama.
--->'''Himekawa:''' [[spoiler:The Ishiyama you united no longer exists.]]
%%** In Chapter 217 [[spoiler: there's Himekawa again: "Oh yeah. [[FakeDefector I forgot to take this off.]]"]]
** Hilda drops this whopper in Chapter 226.
--->'''Hilda:''' [[spoiler:[[MissingMom Master Beelzebub's mother...]][[FaceHeelTurn is in the company.]]]]
* WhamShot:
** The last panel of chapter 202 from the manga reveals that [[spoiler: Himekawa kicked Tojo's ass.]]
* WholeEpisodeFlashback: Chapter 165, which chronicles Himekawa and Kugayama's past.
* WineIsClassy: Played for laughs during [[spoiler: Oga and Baby Beel's FreakyFridayFlip]]. Oga's {{i|nformedAttractiveness}}mpression of [[{{Bishonen}} himself]] daintily holds a glass of wine ''in class'' surrounded by {{bishie sparkle}}s.
* WithFriendsLikeThese: Pretty much sums up Oga and Furuichi's relationship.
* WoodenKatanasAreEvenBetter: Aoi can cut through concrete walls with hers.
** Sakaki managed to cut off a piece of Aoi's hair with his, only for her to one-up him by slicing his sword in two with [[spoiler:a cutesy, flower-printed ''ruler'']].
* WordSaladLyrics: The song the delinquents sing to persuade the principal of St. Ishiyama to let them go on the {{class trip}}.
--> '''Furuichi:''' Why would there only be sadness in your album?\\
'''Himekawa:''' That's because in that album...[[FelonyMisdemeanor there won't be any pictures of us going on the field trip!]]\\
'''Oga:''' [[SugarWiki/FunnyMoments Oh God...]]
%%* WorldOfBadass
* WorldOfTechnicolorHair: Most of the demons have brightly coloured hair, like pink, blue or green. Although it's justified because they're, well, demons, no one in the human world comments on it.
* WorthyOpponent: By the end of their fight, it's highly implied that Oga sees [[spoiler:Takamiya]] as this.
** For the girls, both Aoi and Hilde are this for each other as well.
* WouldHitAGirl: So far none of the delinquents have shown any problem with beating up women.
** Oga doesn't mind fighting girls, but he does hold back from harming the [[spoiler:female Pillars]] directly, causing them to invoke WouldntHitAGirl.
* WrestlerInAllOfUs: Oga finishes [[spoiler:Tojo]] off with a frickin' ''suplex''!
** Which Baby Beel later reenacts with a stuffed lion while Oga cheers him on.
** Also, CHANGED MAN KICK!, CHANGED MAN CLOTHESLINE!, CHANGED MAN ELBOW DROP!, and finally, CHANGED MAN BOSTON CRAB!.
** Tojo gets in on the suplex action while taking on [[spoiler:Jabberwock]].
[[/folder]]

[[folder:Y]]
* {{Yakuza}}: Kanzaki is related to some. We get to meet them in Chapter 143, and being a son of the boss Kanzaki demands their respect.
* YouAreNotAlone: Seems averted at first when Oga [[spoiler:storms Akuma Academy on his own to try and rescue Hilda]]. However then it's revealed that [[spoiler:he has [[MissionControl radio contact]] with Furuichi and Lamia (and later Himekawa)]]. It's finally played straight after [[spoiler: the rest of the school have their BigDamnHeroes moment and chew him out on leaving them behind]].
* YouHaveFailedMe: Kanzaki beating up Shiroyama after he lost a fight, before ordering him to jump out a window. Hecadoth and Graphiel are imprisoned after they lose in a fight against humans.
* YouHaveOutlivedYourUsefulness: Hilda attempts to kill Oga when he first neglects his duties as parent.
** [[spoiler: Takamiya]] loses all importance in the eyes of the [[spoiler:Solomon Company]] after losing against Oga. This causes their agent to [[spoiler:attempt to kill him]] in order to retrieve Lucifer from him.
* {{Youkai}}: [[spoiler:Aoi makes a pact with a Tengu in order to get the power to fight against demons.]] He's described as a type of demon that came to the human world hundreds of years ago.
* YourMom: In Chapter 224, one of these is the [[spoiler: Solomon Company agent's]] parting shot.
--> Yo mamma's so stupid she thinks taco bell is a Mexican phone company!
* YouMustBeCold: Tojo gives Shizuka his jacket while waiting for Izuma to show up.
* YouOweMe: In Chapter 221, Akaboshi and [[spoiler:Mammon's]] help comes with the price of Oga owing them a ''very'' big favour. This is lampshaded by Akaboshi.
-->'''Akaboshi''': I just thought it would be profitable to have you guys indebted to me.
* YouShallNotPass: After [[spoiler:Satan invades Ishiyama]], [[spoiler:Tojo]] singlehandedly takes on over a hundred guys from Shinkyouku High in order to protect [[spoiler:Himekawa's power sealing machine, which is the only thing preventing those in Ishiyama high from [[TakenForGranite being petrified.]]]]
** In Chapter 235, [[spoiler:Akaboshi, Nasubi, and Takamiya]] band together to prevent [[spoiler:Fuji]] from destroying the [[spoiler:second power sealing machine]] before it has a chance to activate.
* YouWouldntShootMe:
** Himekawa does this to the Chinpa mook threatening to throw Futaba off the roof.
--->'''Himekawa:''' I don't really give a damn. Just stop stalling and do it.
** He then shows what it ''really'' means to go through with a threat by chucking him [[ThereIsNoKillLikeOverkill and the rest of the mooks in the VIP area]] off the roof instead.
[[/folder]]