S1 E1 • J'ai recueilli le diable

Oga Tatsumi is a crazy-strong, ruthless high school delinquent who's nicknamed the "Rampaging Ogre". One day, while dunking some punk, he rescues a big guy who comes : floating down the river. When he does, the big guy splits in half and out pops a bouncing baby boy! But this baby is actually Kaiser de Emperana Beelzebub IV (Baby Beel), the son of the Great Demon Lord, and he came from the Demon World in order to destroy humanity! Source: crunchyroll

Première diffusion : 9 janvier 2011

S1 E2 • Caïd & Cub

Oga has been chosen to be the parent of Beelzebub, the son of the Great Demon Lord. However Oga's suffering since every time Baby Beel cries he lets out a severe electric shock. Plus, according to Baby Beel's demon maidservant Hildegarde (Hilda), if Baby Beel moves farther than 15 meters away from his human parent Oga, the electric shock will reach lethal levels. Oga shuffles to school with Baby Beel clinging to his back, having no other choice, and begins to search for someone even stronger than him that Baby Beel will take a liking to, in order to get this monkey off his back, literally! Source: crunchyroll

Première diffusion : 16 janvier 2011

S1 E3 • N'y a-t-il personne de fort et de violent ?

Oga loses the powdered milk that Hilda prepared for him, and instead buys a bunch of "Yogurty" from a vending machine for Beel. But it turns out that's the favorite drink of one of Ishiyama's Big Four, the "Ishiyama Tohoshinki"; the third year Kanzaki Hajime. Oga hears about how horrible and ruthless a guy Kanzaki is, and runs into the third year classroom to try and dump Baby Beel off on him. When he sees Kanzaki's evil looking face, Oga thinks that this just might be his chance! Source: crunchyroll

Première diffusion : 23 janvier 2011

S1 E4 • L'incontinence du diable une seconde avant le désastre

When Oga wakes up one morning, he's floating in a great pool of water... However it is actually Baby Beel's pee, as it is "urination season" right now in the Demon World. Oga is concerned about the entire city being inundated and humanity's imminent destruction, so he takes Baby Beel to the drug store to buy some disposable diapers. While he's there, a bunch of bank robbers a take Oga, Baby Beel, Hilda and Furuichi (who were chasing after him) as hostages. Source: crunchyroll

Première diffusion : 30 janvier 2011

S1 E5 • Il n'y a rien que l'argent ne puisse acheter

On the back of Oga's fist a mark appears that is proof of his contract with the son of the Demon Lord, Beelzebub... The Zebul Spell. After hearing that the demonic power grows as well as the Zebul Spell the more he gets into fights and runs wild, Oga decides not to fight anymore to avoid that situation. However, Himekawa Tatsuya, heir to the Himekawa Zaibatsu and one of Ishiyama's TKKH like Kanzaki, is secretly plotting to do Oga in himself, and gives the command to his lackeys... Source: crunchyroll

Première diffusion : 6 février 2011

S1 E6 • Le Jouet venu des Enfers

A - Hilda brought back a bunch of toys from the Demon World for Baby Beel. When Oga and Hilda were assemble one, a horrible accident occurs! B - The Zebul Spell expands when one does evil. So won't it contract if you act like an angel? ...thinks Oga, who uses a Play Doctor toy with Beel as the doctor to try and heal patients. It's time to play Demon World Doctor! Source: crunchyroll

Première diffusion : 13 février 2011

S1 E7 • Première Expérience au parc

The Park Debut... It is when you first join the community of mothers who bring their young children to the park. That day, Oga took Baby Beel to the park for his nerve-wracking debut... But the rumored BoB Brawler only manages to freak out the local mothers. During this debaucle, Oga meets fellow high schooler Kunieda Aoi and her much younger brother Kota, where he suddenly asks her to "do it" with him?! Source: crunchyroll

Première diffusion : 20 février 2011

S1 E8 • Nouvelle rencontre

The Crimson Queen of the Ishiyama TKKH, who holds the deep confidence of all the women, has returned from subjugating all the Ladies of North Kanto! Hearing the rumors, Furuichi drags Oga along in trying to get a glimpse of her. Before long the Queen appears! She tries to bring the iron hammer down on Oga, who in her absence has defeated two members of Ichiyama's TKKH, and even destroyed half the school, but when she sees Oga appear in front of her...!? Source: crunchyroll

Première diffusion : 27 février 2011

S1 E9 • L'amour est un ouragan

Hilda hears about Kunieda Aoi from Oga and wants to find out more. She goes in search of her to test her skills. At the same time, there's someone with a half-baked scheme against Oga using Aoi's protective attitude. Source: crunchyroll

Première diffusion : 6 mars 2011

S1 E10 • Le Disciple

A cat follows Oga home one day. Baby Beel challenges the cat for Oga's attention. Once the showdown is over, they are surrounded by stray cats, and Baby Beel stands tall to defend! This is the start of a friendship between 1 baby and 1 kitty. Source: crunchyroll

Première diffusion : 27 mars 2011

S1 E11 • Il y a bien quelque-chose que l'argent ne pouvait acheter

Himekawa lives by the motto, "there's nothing that money can't control." In order to get revenge on Oga, he uses the power of money to work behind the scenes in plan after plan to defeat him, but Oga keeps getting the upper hand somehow... Source: crunchyroll

Première diffusion : 3 avril 2011

S1 E12 • Je t'empêcherai de dormir !

Oga's family is seriously worried about Baby Beel's night crying, as it's causing everyone in the entire town to lose sleep. They try all kinds of things but nothing works. Oga heads to school, completely exhausted, as do the other students looking for a fight. Everyone ends up asleep, dreaming... Source: crunchyroll

Première diffusion : 10 avril 2011

S1 E13 • Examen d'évaluation

It's the Ability Assessment tests for Ishiyama High, the den of delinquents. Oga tries studying for the test, for once. Baby Beel and Hilda have gotten used to various customs in the Human World and report on Baby Beel's growth to the Great Demon Lord. Source: crunchyroll

Première diffusion : 17 avril 2011

S1 E14 • Quelqu'un connaît-il des coups spéciaux ?

Kanzaki is thinking hard about why he's unable to be a match for Oga, and tries to perfect a new special move, when Shiroyama realizes the crucial difference... Oga has a baby on his back! Shiroyama and Natsume help Kanzaki go through intense "BoB" training! Source: crunchyroll

Première diffusion : 24 avril 2011

S1 E15 • Les racailles en maillot

Oga hears about the legendary Tojo, the final and strongest member of Ishiyama's TKKH, from Furuichi. And right away, he goes for a showdown! Well, if he knew where Tojo was. Thanks to Himekawa's digging, Oga, Hilda, and the rest head to the beach where Tojo is supposed to be working part-time... Source: crunchyroll

Première diffusion : 1 mai 2011

S1 E16 • Mais t'es plutôt viril !

Furuichi is called back from a resort on a tropical island where he was vacationing with his family to go to the public pool with Oga. At the pool, Furuichi runs into a nasty upperclassmen he knew from middle school, and it's not just him, but Nene and the other Red Tails that are in trouble! Will Furuichi, "the strategist" finally make his move?! Source: crunchyroll

Première diffusion : 8 mai 2011

S1 E17 • Les devoirs de vacances des enfers

The Great Demon Lord decides to send Baby Beel some summer homework on a whim. The gang helps Baby Beel do the homework as best they can, but if they mess up how to use the items in the kit, all of humanity is doomed! Will they actually be able to turn it in on time and in one piece? Source: crunchyroll

Première diffusion : 15 mai 2011

S1 E18 • Caïd sans Cub

Baby Beel comes down with a fever, and Oga's link to him and his never-ending shocking comes to an end. Hilda and Baby Beel disappear, and when Oga goes looking for them he finds Baby Beel stuck on Tojo's back! The battle with the top of the Ishiyama TKKH is here! Source: crunchyroll

Première diffusion : 22 mai 2011

S1 E19 • Voilà le docteur

With a single blow from Tojo, Oga learns the difference in their strength and dejectedly returns home. Waiting for him there are a former court physician and his assistant from the Demon World. Oga is thrown into his own mysterious mental subconscious in order to grow as the parent of a Demon Lord. Source: crunchyroll

Première diffusion : 29 mai 2011

S1 E20 • Rassemblement

Oga is all raring to go finally beat Tojo this time, and Kanzaki and Himekawa try and join forces with him. Then, delinquents come to attack the three! Making it through the forces, Oga finally arrives for his showdown with Tojo... Source: crunchyroll

Première diffusion : 5 juin 2011

S1 E21 • Qui est le plus fort d'Ishiyama ?

The battle to decide Ishiyama's strongest has started! Oga has a tough time against Tojo's beastly strength, but while getting the snot beat out of him he puts his entire body into a single punch that sends Tojo flying back... Who will come out on top as Ishiyama's strongest man? Source: crunchyroll

Première diffusion : 12 juin 2011

S1 E22 • Retraite à la montagne

Baby Beel and Oga head deep into the mountains to help train Beel to get over his fear of bugs, where they run into Aoi and Kota. Aoi is all nervous because it seems like a date, until her master martial artist grandpa shows up! Worried about his granddaughter, he takes the initiative and attacks Oga! Source: crunchyroll

Première diffusion : 19 juin 2011

S1 E23 • Irrémédiable ?

Their work done, Doctor Furcas and Lamia head back to the Demon World, but Oga, Beel, and Furuichi accidentally hitch along for the ride! With Alaindelon out of commission after exceeding his maximum interdimensional transfer weight limit, the gang has no choice but to search for his daughter, but they have to make it through Vlad's Haunt in one piece first! Source: crunchyroll

Première diffusion : 26 juin 2011

S1 E24 • Me voici, monde formidable

In search of Alaindelon's daughter so they can get back home, Oga and the gang head to a city of criminal Demon Beast poachers to rescue her. But before they get the chance, a giant monster appears to take revenge on the poachers for the harm they've done to Vlad's Haunt. And the only one who can stand toe-to-toe with it is... Baby Beel?! Source: crunchyroll

Première diffusion : 3 juillet 2011

S1 E25 • Un nouveau trimestre commence

Oga and Furuichi head off to school to start the new term... except Ishiyama High is still completely destroyed thanks to a certain someone. So instead, all the students from Ishiyama are split up and sent off to different high schools temporarily. Furuichi is all excited since they're heading to St. Ishiyama Academy, the most prestigious school in the area, but when they get there the reality of exactly how they are treated becomes apparent... Source: crunchyroll

Première diffusion : 10 juillet 2011

S1 E26 • Appelle-moi frangin

Oga gains his own follower in Kazuya, who will do anything to become strong like Oga. Oga, increasingly annoyed at Kazuya tailing him everywhere, finally decides to train him. Meanwhile, Aoi is jealous of how easily Azusa, Kazuya's childhood friend, can act cute and girly in front of a guy, and invites her for a little chat to the shrine where she lives. Source: crunchyroll

Première diffusion : 17 juillet 2011

S1 E27 • On l'apelle La Magicienne

Angelica is visiting the Human World for her birthday, and Furuichi is all excited for his big sleepover! But Angelica brought an unexpected gift with her from the Demon World... Yes, they're back! It's a Yople Alien! Knowing the grave danger this poses the city, nay, the world, Angelica does the only thing you can do in this situation: Recruit a 5 member squad of pseudo magical girls and partner with a muscled Moyashi-man to defeat the Blue Ears and save the day! Source: crunchyroll

Première diffusion : 24 juillet 2011

S1 E28 • Prenons nos mesures

Sadohara thinks that by making the Ishiyama students do their own physical examinations that they're sure to cause trouble, which would be enough to get them all expelled! But when Furuichi and Oga end up hiding under a desk while the girls get changed, they've got trouble of a whole other kind... Source: crunchyroll

Première diffusion : 31 juillet 2011

S1 E29 • C’est quoi, les Six Saints Chevaliers ?

Raising Baby Beel isn't getting any easier, and Oga is determined once again to find someone to dump him off on. Oga thinks maybe it takes more than brawn to attract Baby Beel, and starts to search for someone with brains, too! At the same time, rumors of a secret school group made of elite athletes whose job it is to enforce the school's moral code start going around, and members of Ishiyama's special class stop showing up to school... Who exactly are these 6 Holy Knights? Source: crunchyroll

Première diffusion : 7 août 2011

S1 E30 • Qui sont les six chevaliers ?

Oga and Furuichi go off in search of the rest of the 6 Holy Nights, but meanwhile Shiroyama is being picked on by some of St. Ishiyama's students, who know he can't fight back or risk getting expelled. It doesn't take long for the 6 Holy Knights to call out all of Ishiyama to the roof for a real showdown! Source: crunchyroll

Première diffusion : 14 août 2011

S1 E31 • Aucun vainqueur

The top of Ishiyama duke it out with the 6 Holy Knights on the roof! Miki explains how he looked up to Oga back in middle school, and now wants to prove that he's surpassed him with his powerful punching, but before they can settle things the final 2 of the 6 Holy Knights show up, and call off the battle. The next day, Oga and the gang are all set to be expelled! Source: crunchyroll

Première diffusion : 28 août 2011

S1 E32 • qu'est-il arrivé à la nouvelle élève ?

The sport for Ishiyama's showdown with the 6 Holy Knights has been decided... It's volleyball! Kunieda is all ready to start practice when a mysterious transfer student arrives... Actually, it's Hilda, who for some reason has decided to get involved... But can she find a way to actually get the guys motivated to practice? Source: crunchyroll

Première diffusion : 4 septembre 2011

S1 E33 • La blessure du passé

Oga gets tired of volleyball practice and stumbles upon Miki practicing his special move in a dojo. Miki and Oga decided to "spar" with each other, and Miki asks Oga why he betrayed him in the past... Finally, the truth behind Miki's thirst for beating Oga will be revealed! Source: crunchyroll

Première diffusion : 11 septembre 2011

S1 E34 • Désolé pour le dérangement

It's finally the day of the Saint Ishiyama School Festival and the big volleyball match! But the match doesn't happen until the afternoon, so Furuichi decides to enjoy the school festival atmosphere, specifically the Maid Cafe that Azusa and her class are running. Unfortunately things get a bit out of hand... Source: crunchyroll

Première diffusion : 18 septembre 2011

S1 E35 • C'est l'heure du match

The match between Ishiyama and the 6 Holy Knights is here, and this is not your usual volleyball! With their pride and their educational future on the line, the Ishiyama gang puts it all out there on the court! Will Furuichi the Strategist be their trump card? Source: crunchyroll

Première diffusion : 25 septembre 2011

S1 E36 • Comptes enfin réglés

The volleyball game might be over, but with Kiriya invading the gym and taking all the students hostage, the festival isn't over yet! How can Oga settle old scores and save the students if fighting will just get him expelled again? Source: crunchyroll

Première diffusion : 2 octobre 2011

S1 E37 • Il était professeur

Oga and Tojo still have a score to settle with Azuma, but their fight is interrupted by a brand new teacher, who takes them all out like it was nothing at all! Who is this guy and how does he know about Beel?! Source: crunchyroll

Première diffusion : 9 octobre 2011

S1 E38 • Dispute entre frères

Lord En, Baby Beel's older brother, has been sent to the human world to take over Beel's mission of destroying humanity. But he seems more interested in the latest games... Source: crunchyroll

Première diffusion : 16 octobre 2011

S1 E39 • Le grand frère était un pleurnichard

Lord En has been sent to the Human World by the Great Demon Lord to destroy humanity instead of Baby Beel, but before that he wants to experience all this world has to offer! Can Ishiyama Land survive a guest whose tears mean being bathed in a sea of fire? Source: crunchyroll

Première diffusion : 23 octobre 2011

S1 E40 • De nouveaux venus guère bienvenus

Lord En might be more interested in destroying his opponents at video games than destroying humanity, but his personal army, Behemoth's 34 Pillar Division, has other plans... So when one of the Pillars shows up and tries to make a blood contract with Kunieda, it's up to Oga and Hilda to rescue her. Source: crunchyroll

Première diffusion : 30 octobre 2011

S1 E41 • Situation désespérée. Que fait-on ?

Hecadoth, one of Behemoth's 34 Pillars, was after Oga all along! Does he stand a chance against a battle-hardened Demon? Meanwhile, Tojo and Izuma's grudge match is interrupted by another pair of Demons. But coming to the rescue is... Kanzaki?! Source: crunchyroll

Première diffusion : 6 novembre 2011

S1 E42 • C'est l'heure de l'entraînement

Oga, frustrated with his loss to Behemoth's minions, decides he has to train to get stronger. But joining Kunieda's grandfather's dojo to train might not be the best idea... Source: crunchyroll

Première diffusion : 13 novembre 2011

S1 E43 • Où est passé son frère ?

Oga and Kunieda head off to Mapputatsu to train with Kunieda's grandpa, while Lamia recruits Furuichi to find Lord En himself. Furuichi ends up running into Kanzaki and the rest of the usual Ishiyama bunch, and decides to make this a problem for the whole school! Source: crunchyroll

Première diffusion : 20 novembre 2011

S1 E44 • Il faut devenir plus fort

Oga is at Mapputatsu for training with Aoi's grandpa! And his first task is to split a stone with his bare hands?! Meanwhile, Furuichi and the gang continue their search for Lord En, but he doesn't seem to be anywhere... Will there be any progress made this episode at all?! Source: crunchyroll

Première diffusion : 27 novembre 2011

S1 E45 • Les jeux video, c'est une heure par jour maximum

Furuichi and Lamia have a single lead to find Lord En: He's totally hooked on online games! So the whole Ishiyama gang heads over to Himekawa's private gaming rooms to find Lord En online and figure out where he is. Finding him isn't hard, but getting him to tell where he is will take besting him in a gaming showdown! Source: crunchyroll

Première diffusion : 4 décembre 2011

S1 E46 • Enflamme-toi ! Super transformation !

Oga and Beel begin their training with Saotome, but it seems more like exercising than exorcising. Meanwhile, Furuichi and the Ishiyama gang continue their game with Lord En, but something seems off... It seems they're up again an opponent who plays dirty. But two can play at that game... Source: crunchyroll

Première diffusion : 11 décembre 2011

S1 E47 • Désolée d'avoir été si longue

It seems Lord En isn't one to admit defeat quite so easily, as he challenges Furuichi and the rest to endless rematches. But it's not long until Furuichi and Lamia discover the whereabouts of Lord En, and it's only a matter of time until a fight breaks out! Will Oga's training be enough? And can Aoi get back in time? Source: crunchyroll

Première diffusion : 18 décembre 2011

S1 E48 • Je suis son père

Behemoth's Pillar Division has come in force, and the only thing that can stop them is the newly trained Oga! But the technique he's learned is so powerful, it risks the life of the user itself! It's a life or death gambit! Source: crunchyroll

Première diffusion : 25 décembre 2011

S1 E49 • Beel Beel ou le voyage en occident

It's a New Year's special where the entire cast of Beelzebub acts out everyone's favorite ancient Chinese fable, Journey to the West! See the gang as Son Goku, Sanzou the monk, and everyone else in their quest to reach Tenjiku and obtain the sacred sutra! Or maybe just to eat takoyaki! Whatever! Source: crunchyroll

Première diffusion : 8 janvier 2012

S1 E50 • Aujourd'hui le contenu est un peu différent

It's time to start the Pudding-Pudding Exercises! Source: crunchyroll

Première diffusion : 15 janvier 2012