Hilda

, full name, is a Demon that serves as Beelzebub IV's maid. She is also one of the main protagonist of the series.

Appearance
Hilda is an attractive blonde woman with green eyes and a well endowed bust. Her clothes are mostly black with white quillings and thus resemble Lolita Fashion. She is seen outside this outfit on usual occasions. One occasion being right after she wakes up, wearing a modest night gown with her hair down. Another being when she infiltrates Oga's school, dressing in the normal school's uniform, though she complains that the shirt is "a little tight."

Personality
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 knowns more about the current situation then any of the other protagonists and is easily able to manipulate the others into doing what she sees best.

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 beggining of the series she is openly dissaproving of Oga as Be'els' 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 Isabella noted that her personality has changed since coming to human world and wonders what kind of human is responsible for this change.

Plot
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.

Power
Her main weapon is a swordstick-like umbrella again fitting her victorian era theme. However she rarely draws the sword, especially against weak opponents she refuses to do so.

It can be assumed that she is currently one of the most powerful of the series protagonists. She is able to easily draw out her demonic powers, something that other than her, only Oga possesses. It is unkown how her demon power compares to Oga, but as Oga cannot control the power well it can still be assummed that she is stronger.

As a fighter she is quite skilled. Her skills gained her the nickname "Oga Bride" at Ishiyama, as she dispatches her enemies in a similar manner to Oga (shoving her opponents' heads into walls).

Conveyance
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.

Tatsumi Oga
One of the most complex relationships of the series, she and Oga share a love-hate relationship, most often bordering on the hate side. Hilda often looks down on him and never hesitates to mock him. In turn, he finds her cold and manipulative personality annoying. However, it is shown on rare occasions that they do care about each other. It's quite concievable, though, that maybe they feel something more for each other.

It should be noted that the two work extremely well together in a fight.

Beelzebub
Be'el is very close with his wet nurse, Hilda. She was given the responsibility as the mother by the demon lord which she takes seriously, even saying that she was only born to serve her master. For example is when she was stabbed, she still thinks of baby Be'el, not even minding that she has a hole in her stomach. She cares for him like a real mother and only shows her affectionate and loving side to him.

Her feelings for him have grown far beyond the resposiblity to watch over him and is shown to deeply care for his well being, becoming infuriated at her lack of ability to protect him when attacked.

Trivia
- In episode seven of the beelzebub anime, Hilda is shown to be a fan of soap opera