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Beelzebub provides examples of the following tropes:

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  • Darkest Hour: Chapter 215. The delinquents are heavily outnumbered by Takamiya's mooks, and all the heavy hitters have been taken out of the fight. Furuichi's soul is still scattered among the Fallen Angels, and the chances of getting all the pieces back before sunrise looks slim. And Baby Beel has been sealed from Oga, causing him and his Crest bearers (who are on their last legs as is) to become completely powerless. That Oga can't see, hear or feel Baby Beel after the sealing is the icing on the cake.
    • Later outdone by Chapter 235 and most of 236, in which all of Oga's human friends, even Tojo and Kunieda, are turned to stone. Furuichi is implied to have been turned to stone. Behemoth has been turned to stone along with most of the Pillar Squad. All of Takamiya's gang and the other Upstarts are stone. And Oga has to face the consequences of letting Beel go while also facing why he did.
  • Date Peepers: Nene, Chiaki, and Yuka become this during Aoi's aquarium date.
  • Deadly Game: En is very fond of these. Aside from online shooters, others used include sudoku, darts, bowling and pool (though don't ask how any of those are supposed to work).
  • Deal with the Devil: An unintentional one mind you.
    • Each time Furuichi uses the Demon Lord's tissues, he makes one with a demon from Behemoth's Pillar Squad.
  • Death Glare: Jinno, one of Tojo's followers, can give one strong enough to physically harm a person, as Himekawa and Kanzaki found out.
    • Though she rarely does so, Aoi can give out rather nasty ones when she's angry enough.
      Red Tails: The 'Ice Queen' eyes! (It's been a while!)
    • When Natsume stops smiling and looks at Onizuka this way, you know things are about to go downhill fast.
  • Deep-Immersion Gaming: When the gang started playing End of War 4, all the action was seen as if they were really within the game.
  • Defeat Means Friendship: After Oga individually defeated each member of the Tohoshinki, whether they admit it or not, they can be considered as Oga's True Companions.
  • Defrosting Ice Queen: Aoi, at least when it comes to Oga — she behaves much more akin to her babysitting alter ego in daily life after spending time with him, implying that the Ice Queen part is mostly a front. Hilda has defrosted towards Oga too, to some extent.
  • Defusing the Tyke Bomb: Oga's just-realized goal as Baby Beel's foster father.
  • Delayed Causality: Pillar Head Yata pulls one on Tojo thanks to his super-sonic sword.
  • Delinquent Hair: And how. Oga and Furuichi invert this with the first having brown hair and being one of the most feared in the series, while the latter has silver hair but had potential to go to the non-delinquent St. Ishiyama.
  • Designated Girl Fight: During the Akuma Academy Raid, when Oga encounters a Pillar Squad made up of female demons, Aoi enters with Big Damn Heroes aplomb, takes over the fight, and saves him from attacking them any further.
    • When Kanzaki and Kunieda are confronted by two of Takamiya's gang, Kanzaki tells Kunieda to take the girl while he handles the guy.
  • Destructive Saviour: Luckily, Oga and Baby Beel aren't asked to foot any of the bills for the damage caused.
  • Determinator: Oga, Tojo, Kunieda, Izuma and Miki. All of them had got beaten to bloody pulps and yet still forced themselves to get up and fight.
  • Deus ex Machina: Defied. Oga gets a last minute power up from Beel in his fight with Tojo, but gets annoyed and tells him to turn it off, wanting to fight on his own terms. Beel complies, and Oga wins without any extra influence.
    • Played straight later. When confronted by a giant demon monster and surrounded by hell's resident Evil Poacher bandits, Baby Beel develops a previously unheard of power.
    • The concept is openly mocked during Oga's fight against Jabberwock.
      Oga: Like there's such a convenient power-up, dumbass!!
    • Diabolus ex Machina: During Oga's fight with Takamiya. Just as Oga perfects the Father Switch and looks ready to unleash a can of curbstomp on Takamiya, Himekawa shows up out of nowhere with a device that completely seals Beel's power from him.
  • Didn't See That Coming: The Solomon Company masterminds certainly didn't factor Oga choosing the let Beel return to the Demon World into their plans. Cue massive Oh, Crap! when the news broken to them.
  • Digging Yourself Deeper: Furuichi's soul pieces manage to do this twice in Chapter 223. Strategist's backpedaling when the other two call him out on sneakily insulting them only serves to make them more mad at him. Then, Brainless causes his tentative alliance with the Solomon Company to go belly up after he accidentally reveals that he was using them as pawns. The first instance gets resolved rather peacefully. The second does not.
  • The Devil Is a Loser: Or in this case, a hardcore gamer and all-out maniac.
  • Dirty Old Man: Mr. Saotome is accused of being this after sharing his field trip fantasies with the class. Unsurprisingly, his only follower is Furuichi. He kind of is, since in his first appearance when Hilda attacks him, he looks up her skirt and then gropes her breasts.
  • Disco Dan: Lord En is a big gamer but his knowledge (and presumably his skill) are stuck effectively in just the 16-bit generation before meeting the cast.
  • Dismotivation: Seriously what is Oga's motivation? He isn't interested in girls, money, or power and never even seems to actively seek out battles just for the hell of it. Even his desire to get rid of Baby Beel seems to only show up when it's convenient for the plot. It seems that if left alone he would just slack off all the time.
  • Disproportionate Retribution: En thinks that Furuichi is trying to take Lamia from him, so he declares war and swears to bring a whole army next time.
  • Dissimile: According to Mr. Saotome, going through high school without a field trip is like having a burger without a shake.
  • Dissonant Serenity:
    • Natsume. Just... Natsume.
    • When Oga's not grinning during his fights, he wears a completely blank and detached expression, as if he doesn't even realise he's beating the shit out of people.
    • Chapter 162. Fight club competitor brutally breaks an opponent's arm? Furuichi balks, Hilda and Himekawa just stand there. Oga wins his match with an epic One-Hit Kill? Furuichi cheers, Hilda and Himekawa just stand there.
  • Distant Reaction Shot: Happens in Chapter 142, when Aoi literally explodes from embarrassment after finding out exactly what Oga has to do to Hilda for her to regain her memories.
  • Distressed Damsel: Angelica, with Furuichi as the resident Knight In Shining Armour.
  • The Ditz: Azusa, who is always cheerfully oblivious and so dumb it makes her border on Cloud Cuckoo Lander at times. For example when she has to play charades with Kazuya, she immediately blurts out the answer and gets them disqualified.
    • Yuka hasn't once made a serious/normal remark since her introduction. Even Kanzaki thinks she's weird.
  • Diving Save: Furuichi pulls Nene out of the path of Oga's Zebub Blast during the Best Couple Grand Prix three legged race.
  • Does Not Like Men: The Red Tails, especially Nene.
  • Don't You Dare Pity Me!: Hilda, after she reveals the close relationship she had with Baby Beel's mother, Iris to the gang.
    Hilda: Don't show me any worthless consideration. I'll kill you.
  • Doppelgänger: Baby Beel gets a frighteningly powerful one during his training by Saotome.
  • Doppelgänger Spin: Parodied when Himekawa's army of similarly styled minions try to do this when he's facing Kanazaki. Kanazaki walks up to the original and slugs him because the doppelgangers' uniform isn't the same.
  • Doting Grandparent: Kanzaki's dad towards his granddaughter Futaba. Made even funnier due to the fact he's a Yakuza boss and she treats him like filth.
    • Oga's parents seem very doting towards Beelzebub, more-so than they are to their own children.
  • Do Wrong, Right: During the volleyball match, Himekawa gets angry at Tojo and Oga for breaking the rules... and being stupid enough to get caught doing it.
  • The Dragon: Aizawa to Tojo, Natsume to Kanzaki, Nene to Aoi, arguably Miki to Izuma.
  • Dreaming of Things to Come: In Chapter 188, Oga dreams of Baby Beel getting stolen away by a hawk with the head of an eggplant. At first, everyone writes it off as a (rather weird) good luck omen. However, upon returning to Ishiyama, it's revealed that the three dangerous new freshmen are called Nasubi (Nasu = eggplant), Takamiya (Taka = hawk) and Fuji.
  • Dropping the Bombshell:
    • Happens when Hilda introduces herself to Aoi as Oga's wife.
      Hilda: It's nice to meet you. I'm Tatsumi's wife, Hilda.
    • A more minor example happens to Furuichi and Lamia when Isabella lets it slip that Hilda and Yolda are sisters.
      Isabella: Those two would be a nice example of sweet sisters, if it weren't for the fetters binding them down.
      Furuichi and Lamia: WHAAAAAAAAAAT!?
  • Dual Wielding: Surprisingly averted until the entrance of Tiriel and her twin swords.
  • Dude Looks Like a Lady: Natsume at first. He looks slightly less feminine later on, but still abnormally pretty.
    • Athrun too. He and Kunieda could be twins.
      • And now with the mastermind of the Return to Ishiyama arc, triplets.
    • Pillar Head Salamander.
  • Dumb Muscle: There are a lot of these. Generally the bigger and more muscular the delinquent, the less you have to worry about them.


  • Early-Bird Cameo: In the anime, En and his maids get several during the St. Ishiyama arc festival.
  • Easily Forgiven: Aoi invites all of the traitor Red Tails back into the gang again, including their leader, though she is unconscious at the time.
    • However, as punishment, their overcoats have included the character for "fake" until a indefinite set of time.
  • Elaborate University High: San Marx Private Arts Academy, which requires several million yen just for the privilege of entering the campus and boasts security higher than a prison. Not only does it have diamond doorknobs and solid gold gates, their vending machines even have the option to be served a five-star French Cuisine course complete with your very own waiter!
  • Elegant Gothic Lolita: Hilda's default outfit. Apparently it's a requirement for demon wetnurses.
    • Also Lucifer.
  • The End of the World as We Know It:
    • Baby Beel is sent to Earth to cause this.
    • Oddly enough, this is very definitely not the goal of the Solomon Company: they simply want all the inhabitants of Earth to be in a state of eternal suffering, not killed outright. The knowledge that their plan has basically paved the way for Hell on Earth to occur is a major Oh, Crap! moment for them.
  • Enemy Mine: Almost the entire point of the St. Ishiyama arc.
    • And again against Behemoth's men, who everyone thinks are from a rival school called Akuma Academy that must be crushed for having such a stupid name.
    • Then the Six Knights themselves joined Oga's group to help fight En.
    • The Ishiyama gang are forced to team up during the Upstart arc, to prevent being overrun by the sheer number of upstart gangs. However, unlike the other examples, both Kanzaki and Himekawa have problems with this, with the former stewing over the fact that he seems to be Always Second Best to Oga, and the latter pulling a Screw This, I'm Outta Here!.
  • Emotion Suppression: Seems to be what helped Hilda to climb the wet nurse ranks: she ignores her own emotions and lives solely for her master. No wonder she's such an Ice Queen...
  • Enfant Terrible: Kanzaki's adorable little niece Futaba is one of these, manipulating everyone into doing her bidding for her and beating them up when they refuse.
    Futaba: Hajime, open this!
    Shinjo: [to Kanzaki] Are you on a leash?
  • Even the Guys Want Him: If the Spit Take is any indication, Himekawa cleans up very nicely.
  • Evil Counterpart: Pillar Head Salamander to Natsume. Hecadoth also looks a lot like Oga at first glance.
  • Evil Laugh:
    • Oga, all the way. Sometimes for absolutely no reason.
    • In Chapter 160, Hilda's cooking has become so awful that her croquets start doing this.
      Oga: It's laughing with dignity!
  • Evil Old Folks: The masterminds of the Solomon Company are a bunch of strangely identical old geezers.
  • Exposition Break: Oga and Tojo have one to piece together why exactly Tojo happens to be in Akuma Academy. As in, they literally abandon the Pillar Squad members Oga was facing down to have a nice chat in the supply closet Tojo was napping in. It finally ends when some Pillar Squad mooks yell at them for taking so long.
  • Expy: Alaindelon acts and looks a lot like Tessai did in the early parts of Bleach. Just remember the scene where he is in the bed with Ichigo and all questions should be answered.
  • Extra Eyes: Of the Third Eye in the forehead variety - and the fact that Oga gains one may hint that the Demon King has one too.
  • Eyeless Face: The demon guarding the Demon Lord's portrait. Actually not really. It's just hiding a pair of Tareme Eyes.
  • Eyepatch of Power: Pillar Yshiel, who we can assume is strong.
  • Eyes Always Shut: Sakaki, who does open them slightly when he's surprised. Salamander has these most of the time, but opens them more often than Sakaki.
  • Eye Scream: Ringo threatens to burn Oga's or rather Beel's eye out with a lighter during her fight with Aoi.

  • Face–Heel Turn: Koma has a brief period of this during the Okinawa arc where he lends his power to Izo during his fight with Oga so that he can get revenge on Aoi for flushing him down the toilet.
    • Face–Heel Revolving Door: Seems to be his thing as he does it again during the Upstart Arc. Only this time it's Ringo, the second head of the Red Tails.
    • Himekawa seems to betray Oga and the rest of the Tohoshinki for one of the Upstarts.
  • The Faceless: Beelzebub III aka the Demon Lord. We only see him from the back.
  • Face of a Thug: Oga isn't a candidate, since he's only nice when he wants to be, but Tojo is also scary looking and acts genuinely good-natured most of the time.
  • Facial Markings: Edda and Galle from Vlad's Gang sport them. Behemoth's minions also have them.
  • Fake Defector: Himekawa. See The Chessmaster entry for more.
  • Fanservice with a Smile: Azusa and her friends (plus Kazuya) set up a Maid Cafe for the school festival, which Furuichi frequents.
  • Fed to the Beast: Natsume and Kanzaki attempt to chuck Furuichi into the aquarium shark pool in Chapter 150.
    Furuichi: I'm so very sorryyyyy!
  • Femme Fatale: Yolda would be a convincing one, if her attempts didn't keep getting interrupted for the sake of comedy.
  • Fetch Quest: The Demon King sending Oga to retrieve the Demon's Portrait is what starts off the San Marx arc.
  • Fight Clubbing: San Marx FC Underground, located in a renovated air shelter in San Marx Private Arst Academy. Of course, since said academy is an Elaborate University High bordering on Fiction500, it resembles a professional sports stadium.
  • Filler: The anime is very fond of using these and various Day In The Lime Light episodes to stretch out the manga arcs. However this means that the canon manga filler arcs (such as the Beach Episode) are often mistaken and treated the same as pointless filler eps, which usually is with much rage and annoyance.
  • Final Speech: Alaindelon, after teleporting to the wrong part of the Demon World and being impaled on a tree, starts giving some corny speech about promising to give his daughter a dress for her birthday, until Oga and Furuichi tell him to stop with the cliché death lines already.
  • Finger Poke of Doom: Izo's is strong enough to fling a hapless mook several meters out to sea! Though that may be because he's got some demonic power handy...
    Izo: He sure flew far...
  • First-Name Basis:
    • Miki insists that Oga should call him "Hisaya", but Oga refuses because he thinks guys being that personal is creepy.
    • Alaindelon also calls Furuichi by his first name by mistake, causing Hilda to question their relationship. Alaindelon blushes and says that it "just came out".
    • When Hilda loses her memories she begins calling Oga by his first name (the chapter is even called "Tatsumi"). Oga's reaction is hilarious.
      • And then she keeps doing it after getting her memories back. Oga is a bit confused the first time.
    • During their first meeting, Aoi thinks that Oga calls her by her first name. (He doesn't, but just had the unfortunate timing of saying 'Ah' and 'Oi' in quick succession.) This is what spurs her into attacking him.
  • Flat "What": The most common reaction to Oga and Beel's more outlandish antics, usually to whichever character has the role of the Only Sane Man at the time. Though the one that takes the cake has to be the Upstarts' reaction after they discover that Oga has skipped out on their tactics meeting about the threat of Fuji in favor of going to America.
  • Forced into Evil: Hilda is convinced that this is the reason why Iris appears to be working with the Solomon Company.
  • Forgotten Childhood Friend: Miki is this to Oga, complete with his own vague turning point. Subverted.
  • Freak Out: En has one after Oga beats Jabberwock meaning that he has lost the game.
  • "Freaky Friday" Flip: Between Oga and Beel as an after-effect of using Super Milk Time for too long.
  • Freddie Mercopy: Alaindelon is based enterely on Freddie Mercury, not just in the look (short hair and moustache), also he sports sweatshirts and even has some mannerisms of him.
  • Freudian Excuse: Takamiya's is that Lucifer devastated his entire family and he was isolated for two years until Saotome showed up to help him control Lucifer, which is why he hates Oga for having such a comparatively-easy-to-handle demon. Oga dismisses this as whining over the past.
  • Fun Size: The main pieces of Furuichi's soul are several inches tall. Naturally, they lampshade how good this size is for looking up skirts.
  • Fun with Acronyms: Chapter 146 gives us the Principal Isurugi Enticement Strategy, or P.I.E.S for short.
  • Furo Scene: Oga, Furuichi, and Natsume all get one in the anime.
  • Fusion Dance: Super Milk Time does this to varying degrees with Oga and Beel.


  • Hair Flip: Long hair Natsume is quite fond of running a hand through his hair. It also gets its fair share of dramatic flipping in both the manga and anime.
  • Hair-Trigger Temper: Most delinquent characters will turn to violence with very little provocation.
  • Hard-Drinking Party Girl: Suiten is revealed to be one when she gets depressed, even replacing Aoi's water with vodka. Shame she Can't Hold Her Liquor (and neither can Aoi).
  • Hard Work Hardly Works: Averted during Oga's fight with Jabberwock, where he manages to turns the tables by simply putting more effort into his moves.
    Oga: Who the hell said that trying harder makes you weaker than being awakened!!!?
  • Harmful to Minors: When he was a little kid, Takamiya was forced to watch as Lucifer struck down his father with enough force he was left in a months-long coma.
  • Harmless Electrocution: What, do you expect the adorable Baby Beel to actually kill someone in this series?
    • Demons like Hilda and people with super strength like Oga only end up charred, but notably weaker characters are more severely injured or knocked out, as shown with the Rice Boy actors in Chapter 157. It kills bugs though.
  • Head Pet: Lamia carries a cute little ghost around on her head.
  • Hereditary Hairstyle: According to Himekawa, male members of his family have their hair styled in a pompadour as soon as their umbilical cord is cut.
  • Here We Go Again!: In Chapter 188: first day back to Ishiyama High. Some things never change.
  • Heroic BSoD: Oga has had three, all of which are played for comedy. The first time was when he found out he could have gone on holiday abroad with Furuichi instead of kidnapping him, causing him to spend the next couple of hours spaced out and talking with an Okinawan accent. The second time was after he failed to protect Hilda and got beaten by a demon, making him depressed so he started apologising to people for being weak after beating the shit out of them. A third happens when trying to rescue Hilda; he is presented with a Sudoku puzzle and gives up before the enemy finishes explaining. When Tojo comes along, he does the exact same thing.
  • Heroic Comedic Sociopath: OGA.
  • Heroic Sacrifice: Nene performs one, Taking the Bullet to save Chiaki in the online war game. She makes it very dramatic, giving a little speech and everything, only to wake up again seconds after dying due to Chiaki being a Medic.
    • Hilda pushes Oga and Beel out of the way of an oncoming dragon.
    • Almost everyone in the Fuji arc in order to protect Oga, and to a lesser extent Furuichi. In this case it doesn't mean death, just being turned to stone.
  • Heroic Second Wind: Kanzaki has one in Chapter 194, after he gains the King's Crest.
    • Practically all the Ishiyama delinquents during Chapter 216, due to Baby Beel directly powering them up and sheer force of will.
      • Unsurprisingly Tojo is the exception, despite being shown to have gotten a King's Crest and not realized it only a few chapters before. Once its power is gone, he gets beat badly but refuses to stay down, THEN thinks he has it and starts to win again despite Beel being nowhere near him and his opponent explicitly telling Tojo he doesn't even have one now.
  • Hidden Depths: Chiaki takes video gaming very seriously. Even Nene notes that she's like a different person when there are games involved.
    • Natsume certainly has them, but we don't know exactly what they are yet.
    • Neither Furuichi nor Himekawa seem like genius strategists at first glance. Himekawa's wealth and pretty boy looks could also count.
  • Hidden Eyes: Characters are often drawn with this when enraged or badly injured.
    • Pillar Kirin wears a blindfold at all times.
  • Hidden in Plain Sight: After three days of non-stop online video games searching for En, the gang eventually find out that he and the maids were living right next door.
  • Hidden Purpose Test: When the resident shrine Tengu starts asking Aoi questions, she expects something like a test of character. Instead she gets asked about her measurements.
  • High-School Hustler: Himekawa. His brazenness seals the deal on both the volleyball gambit and "End of War 4". It helps he's got the cash to back it up, though.
  • Horned Humanoid: The Demon Lord has a rather cartoonish looking pair.
  • Horrible Judge of Character: Kazuya thinks Oga is the most awesome guy in the world. He also described Furuichi as Oga's super cool, good looking Number Two.
  • Hospital Hottie: The outfits that come with Baby Beel's doctor kit invoke this. However, considering it's Oga and Furuichi wearing them...
  • Hostage Situation: While the Chinpa mooks play it straight in Chapter 153, Himekawa spoofs it by taking a mook hostage, delivering a standard hostage taker spiel...and dropping the mook off the roof mid-speech:
    Himekawa: Don't move or else I'll drop this—
    [drops mook]
    Himekawa: —guy. Ah, he fell.
  • Hot Springs Episode:
    • Following their training, the Teimo gang, Aoi and Oga go to a shrine with hot springs. Mikagami considers peeping into the girls' half, only for Aoi to reveal that she and Isafuyu can hear them and close the partition.
    • Yuka, Ryoko and Kaoru of the Red Tails get Hilda to go have a bath with them at the hotel in Okinawa.
      Yuka: We're gonna talk amongst ourselves naked, as women.
    • Also in Episode 57, Hilda wins a trip to one taking the Oga family with her.
  • Hot Wind: The anime often uses this around longhaired!Himekawa. The first time this happens, Kanzaki promptly nails him in the face with a volleyball and yells at him for being too 'sparkly'.
  • Hour of Power: Oga's Super Milk Time. It gives him Game-Breaker power levels, but can only be used for a limited time before it starts having side effects. Furuichi also gets in on the action with tissues, which poison him and make him hallucinate, but imbue the power to summon demons like Jabberwock.
  • How Dare You Die on Me!: In the Demon World, Oga yells that if Alaindelon dies, then he'll kill him. Yeeeaaah.
  • Humongous Mecha: If this isn't enough, Himekawa gives us this.
  • Hypercompetent Sidekick: Natsume to Kanzaki, and to a lesser extent Aizawa to Tojo.

  • Identity Amnesia: Salamander's flames completely erase your personality, leaving you with no memories or idea who you are. This is how Hilda ends up. Oga is so unnerved he eventually can't take it any more and runs for his life.
    Oga: This isn't the Hilda I know!!!
  • Idiosyncratic Episode Naming: Babu [chapter number]
  • Idiot Hair: Pillar Head Salamander, although he's definitely not an idiot. Mischievous, hell yes. His personality certainly fits the Hair Antennae trope, though.
  • Idiot Hero: Oga, though he lacks the usual good-natured personality that comes with it in favour of being a sociopath and troll. Frequently pointed out by other members of the cast.
  • Idiots Cannot Catch Colds: Furuichi brings this up when Oga sneezes due to being gossiped about.
  • I Don't Like the Sound of That Place: Vlad's Haunt, Decapitation Island.
  • I Fight for the Strongest Side: Himekawa says this almost word for word in Chapter 217. Of course, the "strongest side" he's referring to is not Takamiya's, but Oga's.
  • I Have the High Ground: Hilda stands atop a lamppost in the first chapter, prompting Furuichi to tell her they can see up her dress.
    • Apparently Mr. Saotome eats his ramen on top of cranes in the anime.
    • Episode 55 has Kanzaki begin his Big Damn Heroes moment by announcing himself from the school roof.
  • I Have Your Wife: Himekawa kidnapping Hilda and Furuichi to lure Oga out.
    • The Chinpa group kidnap Yuka and Futaba in order to lure Kanzaki and Tojo into an ambush.
  • Imagine Spot: Furuichi and Aoi are both very prone to having these, especially in the anime.
    • Seems Furuichi's Butt-Monkey status has bled into these as well. The one he has during the Okinawa arc has him chasing after swimsuit clad Red Tails, who are throwing abuse at him at every step.
      Nene: Creepy bastard.
      Ryoko: Touch me and I'll slit your throat.
  • Imposter Forgot One Detail: Parodied in Chapter 217. Kanzaki sees through the Doppelgänger Spin the fake Himekawas pull easily...because they're all dressed completely differently from the original Himekawa.
  • Improbable Weapon User: Both Hilda and Aoi have used umbrellas to devastating effect.
    • Aoi also cut Sakaki's bamboo sword in half with a ruler.
    • Yolda wields a mop.
    • Behemoth has managed to take down two of the Six Knights with a pair of shoes.
    • Possibly the most ridiculous example is Oga, wielding Alaindelon. While impressive that Oga can carry a grown demon with one hand, it goes about as well as you would expect.
  • I'm Taking Him Home With Me: Said by Tojo when he sees a runaway Baby Beel for the first time near a dump.
  • In a Single Bound: Happens during Oga and Hilda's match against Mr. Saotome and Suiten during the Best Couple Grand Prix. The stunned spectators lampshade this to high heaven.
  • Indirect Kiss: The Best Couple Grand Prix has an entire round devoted to this, which Kanzaki and Yuka have to participate in.
  • Informed Attractiveness: Oga, sort of. He gets Beel to act like a total pretty boy, complete with bishie sparkles and love bubbles, as that is how he believes he acts. However in reality he acts anything but. Although, many people do think that he possesses a more rugged type of charm...
  • Inner City School: Ishiyama High. Filled to overflowing with Delinquents, who are constantly getting into bloody gang wars and never go to class. And not a teacher in sight!
    • Would you be seen in that situation?
  • Inner Monologue: Oga has one in Chapter 160, only for the delinquents he's facing to yell at him for giving them an unneeded introduction and call him out on the lies in it. Furuichi has one in the next chapter that is derailed halfway through after he tastes some delicious French cuisine.
  • Innocent Aliens: The Yople Aliens, which are the nicest demons in the area. If you harm one though...
  • Innocent Cohabitation: Oga and Hilda, who everyone (including his parents) think are practically married, but in reality hate each other and only live together for the sake of Baby Beel.
  • Insane Troll Logic: It's everywhere, but primarily Oga, Tojo and Kanzaki. Basically anyone who isn't a Straight Man or holding the Sanity Ball can be affected.
  • Instant Fan Club: The Chinpa mooks form one for the Tōhōshinki after Oga curbstomps Izo.
  • Intentional Engrish for Funny:
    • Furuichi, in Chapter 225.
      Furuichi: Ai kannot supiika ingariishu!
      Oga: What are you saying to him?
    • Later on:
      Oga: ...[beat]...Faaku...
      Furuichi: Why that word?!
      Oga: My name...just became Fuck...
  • Internal Reveal: Aoi finally finds out about demons when En first appears and summons a throne out of nowhere. An Internal Unreveal, at that.
    Aoi: Oga, hey, wait a sec...what was that?
    Oga: Huh? I don't know. Probably magic. Those guys are all demons.
    Aoi: Magic? Demons!?
    Oga: What's up with you? Didn't I tell you already?
  • Interplay of Sex and Violence: Yolda seems like she's trying to kill Oga one minute, then kisses him the next. She also renders Aoi and Furuichi unconscious by caressing their cheeks.
  • Invisible to Normals: Koma, the Youkai Aoi made a pact with, though Furuichi is at least able to tell that there's some sort of presence near her when she summons him.
    • The demons Furuichi summons using the Demon Lord's tissues.
  • Invulnerable Knuckles: Oga and Tojo are the leading offenders. Miki averts this, seriously damaging his hands after training too vigorously.
  • Ironic Echo: Most of the early chapters of the manga follow Oga's desperate efforts to pawn Beel off onto someone else. Some 200+ chapters later, when Oga has been completely sealed off from Beel, Takamiya mockingly asks him how it feels to be separated from his demon.
  • Is That Cute Kid Yours?: Aoi's younger brother Kota is often mistaken as being her own child by the other mothers. There's also Oga and Beelzebub.
    • Presumably Aiba gets the same treatment with his baby sister.
  • It's All My Fault: Surprisingly enough, Oga experiences a moment of this, blaming himself for Hilda's amnesia and complaining that if he can't put things right he'll regret it forever.
  • It's Quiet… Too Quiet: Upon returning from America, Furuichi quickly catches on to how quiet Ishiyama has become. It's probably due to the fact that most of the population has been Taken for Granite.



  • Kangaroo Court: Chapter 89: Oga's nightmare of 'People vs Oga' in "Isn't it about time we stopped calling him the best? Because he got beaten ragged."
    • It picks up again in Chapter 124, with the second proceedings getting under way. Oga has to wear a sash marked 'Loser', and Judge Furuichi is crazier than ever, talking about Buddha's face and insisting that it's not what Oga said, but his feelings that are important. It just gets even more trippy from there.
      Oga: This again? You guys are making no progress at all.
  • Kansai Regional Accent: Quite subtle, but you can tell when they start calling each other "aho" instead of "baka". It is set around Kanto after all, and adds to the delinquent stereotype.
  • Kick the Son of a Bitch
  • Kleptomaniac Hero: While in San Marx, Oga and Furuichi discuss whether to or not to steal one of their doorknobs. They might be slightly justified in that these particular doorknobs are made of diamond.
  • Knight of Cerebus: While En is not dark in and of himself, his arrival (and the near immediate secondary arrival of the Pillar Squad) takes the story into a slightly less comedic place. Sort of a shift from Action-Comedy to Dramatic-Action-Comedy.
    • Several members of the Pillar Squad itself, however are very dark, as is their purpose: To get En to end the world.
    • The Akuma Academy arc seems to have Cerebus Syndrome setting in. Thankfully there's still a ton of gags even if the story is getting darker.
      • Ironically, it's not denizens of hell who really pull off this trope, but rather the returning students of Ishiyama, some of whom Took a Level in Badass enough to terrify Baby Beel. And so far, are definitely not played for laughs.

  • Lampshade Hanging: How most of the comedic scenes work.
  • Language Barrier: Oga and Furuichi collide headfirst into one when they travel to America. Hilarity Ensues...until Hilda gets sick of their fumbling and supplies them with Translator Microbes.
  • Large Ham: The leader of Vlad's Gang. When he's trying to taunt Angelica into working for them, he indulges in a moment of evil laughter, then orders his men to laugh along with him. After a couple panels of the laughter SFX almost completely obscuring the background, he has to yell at them to stop again.
  • Last-Name Basis: Furuichi and Oga are nearly always referred to by their last names, even when with each other.
    • Lampshaded as Hilda apparently didn't know Furuichi's first name until Alaindelon mentioned it about one hundred chapters in.
    • Also extends to the four TKKH heads (except for when the Red Tails address Kunieda), Natsume, and Miki.
  • Leave the Two Lovebirds Alone: Happens in Chapter 155, when Nene (forcibly) drags Yuka away from Izo and Aoi's heart to heart.
    Nene: We're leaving.
    Yuka: Nyaah, why?
  • Lethal Chef: Hilda, whose cooking is apparently perfectly deadly (particularly the croquettes). Not even Baby Beel can stomach them...
  • Let's Fight Like Gentlemen: After seeing that Takamiya is willing to fight him to the bitter end, despite losing contact with his demon and being on his last legs, Oga gets Beel to stand aside so that they can fight on even terms.
  • Let's Get Dangerous!
  • Let's You and Him Fight: The ultimate goal of the Solomon Company is to provoke Satan and Baby Beel into engaging in a never-ending war, which will have the much welcome side effect of plunging Earth into a state of complete chaos.
  • Like Father, Like Son: Oga and Baby Beel often mirror each other's actions and expressions. Their similar looks are also why Oga's family so easily believed Baby Beel is his biological child.
    • During their field trip in Okinawa, Beel mistakenly gets into a sticky Love Triangle between Futaba (Kanzaki's niece) and Chiyo (Izo's sister), the two wanting to get a straight answer out of Beel (who, by the way, can't talk) as of who he prefers more. Cue comparisons with Oga's situation between Hilda and Aoi. Nene even lampshades it.
      Nene: Like father, like son.
  • Literal Split Personality: As of Chapter 221 Furuichi's soul has been split into three distinct parts that reflect the facets of his personality: the shameless side, the brainless side, and the strategist side. Interestingly, both Non-Indicative Name and Meaningful Name run rampant here. Strategist seems to be the least sneaky and tactical one out of the lot; preferring to simply follow the gang's plans to unite the three pieces. On the other hand, shameless and brainless both wish to become the 'original' personality of Furuichi and are willing to go to any lengths to achieve this. Shameless is unabashedly manipulating his friends in order to gain the support of the people who are most likely to bring his power play to fruition; namely Misaki, the only person to have beaten Oga. Unfortunately for him, Brainless has the same plan, only he has decided to join forces with the Solomon company to achieve it.
  • Loads and Loads of Characters: Each new arc brings with it 3+ characters.
  • Locked in a Room: Hilda and Oga; it was their own fault, they learned nothing except that Baby Beel is dumber than a chimpanzee, and that the directions are evil.
  • Locked Out of the Loop: Kunieda until she discovers that Baby Beel and Hilda are demons. Lately, Furuichi is becoming more and more estranged from main events (and he realises it too).
  • Lonely Rich Kid: Himekawa. Overlaps with I Just Want to Have Friends Type B. Despite being the son of the head of a very large financial group, Himekawa chooses to enroll in the worst high school in Japan and practically buys himself into the whole delinquent scene so that he can have tough kids on the opposite side of the social spectrum to mingle with and boss over. May be due to Parental Abandonment as Himekawa reveals he lives alone in a high-rise apartment complex owned by his family.
    • During the online gaming chapters, he invites the Ishiyama gang over to his pad for three straight days to play against Lord En, accommodating all their needs down to providing them with individual gaming terminals and a multi-panel viewing base! On the surface it seems Himekawa is merely boasting about the depth of his pockets, but it turns out he really does enjoy the gang's company and will do everything money can buy to show them appreciation and keep them around (such as giving the gang a big bag of very expensive cookies after winning the volleyball game against St. Ishiyama).
    • This is even lampshaded by Yuka after Himekawa's building is destroyed and he's shown above the ruins.
      Yuka: I think he may be lonely now that everyone has gone home.
      Chiaki: That's a good one.
    • Hell, even En is one of these. The whole reason the Akuma Academy arc happened is because he wanted to play a video game.
  • Look Behind You: How Kugayama managed to get the Demon's Portrait off Himekawa.
  • Loony Fan: Kazuya, who follows Oga around insisting they are "bros" and trying to be his groupie. Oga and Furuichi eventually give in to flattery and let him tag along.
  • Lovecraft Lite: The series frequently deals with normal human beings caught up in things way too cosmically powerful for them to even hope to fight back against. And it's all Played for Laughs.
  • Love at First Sight: Izo Aiba towards Aoi. Seems to run in the family as well, seeing as his sister has fallen for Beel.
  • Love Triangle: The series has several. Aoi thinks that she's in one with Hilda over Oga. While at first this is proven to be wrong, it might be turning into a possibility when you take into account the Belligerent Sexual Tension that Oga and Hilda are developing and Hilda's memory loss personality, who believes that she is Oga's wife. A more straightforward one happens with Baby Beel, Kanzaki's niece Futaba and Izo's sister Chiyo. Finally, it is implied that there is one between Izuma, Shizuka and Tojo, though Shizuka seems to have chosen Tojo.
  • Luminescent Blush: Aoi after one too many glomps from Beel.
    • Hilda makes up for never having blushed before by doing it about once a page in Chapter 139 after reuniting with Baby Beel and getting embarrassed about her relationship with Oga.

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