Beelzebub

Yolda (ヨルダ)

Yolda (ヨルダ, Yoruda) bears a strong resemblance to Hilda and carries a mop with her, which she uses as a weapon much as Hilda uses her parasol. The two seem to have an unsettled score and Yolda positively despises Hilda. She is also able to move very quickly and knocks Furuichi and Kunieda out easily. In contrast to Hilda, she has a femme fatale attitude. It is later revealed that she is a dimensional transfer demon like Alaindelon; her powers are said to be even greater than his, and she is able to distort dimensions and create sections of space detached from the physical world. It is later revealed that she is Hilda's sister.
Yolda strongly resembles her sister, Hilda, the only difference is a slight change in costume and keeps her bangs out of her eyes and her hair loose rather then tied. Yolda also carries a mop, while Hilda carries a parasol.
Regardless of what she is saying she will commonly speak in a cheerful and playful manner, even if she is issuing death threats or insults. She also seems to be flirtatious, as she attempted to kiss Oga upon first meeting him.

Beelzebub

Izabella (イザベラ)

Izabella (イザベラ, Izabera) leads En's three nurses and has a cold, serious attitude.
She has a cerulean blue shoulder-length hair and has blue eyes. She wears glasses and carries a book of incantations that she uses to cater for Lord En's needs and whims.
Izabella can casts spells and can paralize someone's body by simply touching their heart.

Beelzebub

Sachura (サテュラ)
  
Sachura is one of En's three Maid Demons, often seen serving En Calpis soda on ice. She wears her long red hair in two braids and appears to be the youngest of the nurses.

Beelzebub

Lamia (ラミア)

Lamia is a demon doctor who is very small. Her name is possibly an allusion to the mythological demon. Later in the series, she seeks Furuichi's help to find Lord En on Hilda's request. Furuichi suspects her of being a tsundere character. Lamia carries a pistol loaded with bullets containing demonic concoctions that can erase memories, force a person to do one's bidding or, in the case of Oga, trap him in a psychic loop. She is always accompanied by two small muumuu pets, one of which sits atop her head and often mimics her mood. Her age is unspecified, but her appearance is that of a pre-teen girl. Her mother is general Laymia of the 34th Pillar Squad.

Beelzebub

Aoi Kunieda (邦枝葵)

First appearance: Chapter 10
Age: 17
Height: 165cm
Birthday: May 15

Aoi is 17 years old, a second-year student and the third leader of the "strongest ladies of Kantou", the Red Tails. She is first introduced in disguise at the park taking care of her baby brother, Kouta, who is constantly mistaken as being Aoi's own child by the mothers at the park. She is the daughter of a local temple keeper. Her nickname is Queen because she is the protector of all the girls at Ishiyama High from the men's "grubby hands". Because of Oga's dense personality, he has yet to realize that the girl he befriended at the park and Kunieda are one and the same. Despite her tough personality, she has a rather girlish crush on Oga but refuses to admit this fact to others. She can feel Saotome using his demon power, which shows she has notable strength for a human.

Kunieda differs from the other thugs at Ishiyama in that she has formal martial arts training from her grandfather, the master of the shingetsu style. She is also not a bully, and steers the leadership of the Red Tails towards preventing unnecessary fights in the school. This is what puts her first in collision course with Oga, as the latter is deemed by her to be responsible for most of recent violent events in the school. They have two exchanges: in neither does Oga return her attacks, limiting himself to evade them, first to let baby Beel assess her strength and thus find out whether she is a potential replacement for him; later, because a failure in communication leads Oga to believe that Kunieda's condition to take Beel is that he should resist her charges. She is greatly impressed by Oga's speed and power, and misunderstands his advances on her (to get rid of Beel) as romantic interest. After he saves her from a plot by the MK5, she decides to leave the Red Tails and become a more disciplined person, and at the same time her crush on Oga increases. Later, she and the Red Tails intervene to stop the whole male student body of Ishiyama from attacking Oga, allowing him to proceed to a confrontation with Toujou unhindered.

She at first harboured some jealousy against Hilda, seeing her as a potential rival for Oga, but on discovering the truth about her and Baby Beel's true nature, their animosity becomes less pronounced. Later, it is Hilda who becomes jealous of Beel's attachment to Kunieda.

She is a skilled swordswoman and martial artist, and possesses an immense amount of vitality and stamina, as well as impressive speed that is above Sakaki Mitsuteru's, who is known to be able to wield his sword at 250 km/h (however, she is not fast enough to hit Oga, who manages to evade even her best attacks with minor injuries). She can use any weapon she chooses in battle, and has even been shown to fight with nothing more than a ruler. She has shown the ability to assess opponents' strengths and weaknesses very quickly. Despite all this however, Hilda has noted that Kunieda is still below Oga's level in terms of battle capabilities.

Beelzebub

Takayuki Furuichi  (古市貴之) 


Birthday: November 11
Age: 16
Height: 175 cm (5'9")
Likes: Cute women, beautiful women, simply women.
Dislikes: Long stories

Takayuki Furuichi is one of the main protagonists of Beelzebub.

Furuichi is Oga's best friend and along with him is a 1st year at Ishiyama High. After finding out about Oga's baby he joins him up in his search for a new parent. He is actually the most normal person in the anime/manga because he tries to add common sense to everything. He also has no powers.

Furuichi has silver/white hair and he is usually seen wearing the highschool uniform. He often retains a calm face but when Oga or other characters do something outrageous he turns insane in a comical fashion.

Although Furuichi does retain a rational, passive and calm demeanor, he usually reacts in an insane (yet comical) fashion whenever a character does something outrageous. He also has a wild imagination when it comes to women, always fantasying about them in a overly perverted manner. And despite his desire to hit it off with the ladies, he often fails to please them or get their attention because most of them, demon or human, are stronger than him and many moments of comic relief in the series arise when his advances on girls get frustrated, particularly by Alaindelon. He especially envies Oga for being the object of Kunieda's love and for living with Hilda under the same roof.

Beelzebub

Hildegard (ヒルデガルダ)

Race: Demon (Maid)
Age: under 18
Gender: Female
Height: 162cm
Eyes: Green
Hair: Blond

Hilda is an attractive young woman with blonde hair that covers one side of her face and is tied in a bun, green eyes and a well endowed chest. Her clothes are mostly elegant and black with frills and white quillings, thus resembling Lolita Fashion. She is seen wearing other outfits on a few occasions. One occasion being right after she wakes up, where she was wearing a modest pink night gown with her hair down.

When she infiltrates Oga's current school she dresses in the Saint Ishiyama High uniform, though she complains that the shirt is "a little tight."

Hilda commonly displays a cold and impassive demeanor, a character trait that she breaks only on rare occasions. (excluding her interactions with Be'el). Toward Be'el she is very affectionate and protective, acting as the role of the mother and preforming the task a mother would such as cooking for and washing Be'el. She often knows more about the current situation than any of the other protagonists and is easily able to manipulate the others into doing what she sees best. Hilda also has a fondness for extremely spicy foods, such as super spicy habenero buns.

She is shown to be just as bloodthirsty and violent as Oga, a trait that earned her the nickname "Oga's Bride" at Ishiyama. In a fight she displays a complete confidence in her own skill and power, regarding her opponents calmly and often taunting them in mid battle.

She enjoys teasing and tormenting Oga, frequently making marks about his intelligence and (in her own mind) poor parenting skills. In the beginning of the series she is openly dissaproving of Oga as Be'el's parent but after the delinquent defeats Toujou she becomes much more accepting and warmer towards him, even thanking him after. But she still bickers with him.

In Chapter 104, it is hinted that her time with Oga and Baby Beel has changed her, as Izabella noted that her personality has changed since coming to human world and wonders what kind of human is responsible for this change.

Hilda originally came to the human world by command of the Demon King to raise his son, Kaiser de Emperana Beelzebub IV, to be a 'good' human destroyer. Beelzebub however got so attached to Oga Tatsumi, that she now observes him and his progress in being the future demon king's parent.

Despite the fact that she is naturally just as fast as strong she is as a demon, Hilda rides a giant bird-like being named Ak-Baba. Although she has not been shown riding it lately.