Black Percher

Black Percher (ペスト Pesuto)  is the [Demon Lord of the Black Plague] and the leader of [Grim Grimoire Hamlin]. She is the embodiment of the 80 million evil spirits that were created during the Black Plague and the first Demon Lord of the series. Due to her defeat she now serves as a maid for the [No Name]s.

Appearance
Percher is a rather pale young woman with red eyes and short, purple hair that she keeps tied back with two black hair clips and bows, each possessing white dots on them. Her bangs are rather long, part of them swept to the left side, covering her forehead. Percher is rather short, being barely taller than Jin and Leticia.

She wears a black dress with detached sleeves, each possessing white buttons on them. Her white skirt possesses a black polka dot pattern to them with black lining to the skirt and second set of sleeves. Under both her sleeves and skirt is a third part of cloth that is white in a frilly pattern. She wears black shoes over her feet along with black, thigh high stockings. Along her waist is a blue horn held by a piece of brown rope.

When working as a maid for the no names, she wears the exact same maid uniform as Leticia.

Personality
Percher has a quiet and proud personality, even during fights she displays a calm and collected attitude, if not a bit arrogant towards her opponents. She is also quite insidious as she would kill all the participants of the Rising of The Fire Dragon Festival just so she could get the powerful communities in the area to join her. However even she is not above anger and becoming upset if a situation is turned against her, such as when Black Rabbit sent the contestants to the Moon with her Gift and when Shiroyasha is involved somehow. Though this anger also stems towards her comrades, as she was very upset with Rin when she insulted Ratten and Weser, who willingly gave their lives to Percher and followed her out of loyalty. Her care even stemmed to the 80 million souls who perished during the Black Plague as she was unable to leave those souls alone and carried them along with her so they wouldn't be lonely.

However, this personality changes a little after spending some time with the [No Name]s, especially Jin Russell. Initially she did not care for the group and would go out of her way to insult them, though she began to come to respect the group, especially Jin after declaring he would help her with her goal. While still prone to anger much more than before and retaining her pride, Percher began to lose the loneliness and sadness in her heart.

Background
After contracting the Black Death, her father locked her in the prison cell of her own home out of fear of infection. As a measure to eradicate the sources of infection, her father had ordered the killings of all the farm serfs who had been close to her. Not knowing that the infection of Black Death was through the contact of contaminated blood and fleas, he contracted the same disease and their whole family was wiped out. Moments before her death, she shouted a curse from her prison cell for all of them to die and when they did, it gave her a small amount of spiritual power.

After her death, she wandered around in Europe aimlessly, during which she met more people who had died in the same manner and decided to bring them all with her. Over a span of several hundred years, she had set foot into the Asian continent and gathered a huge family of 80 million souls without realizing it. Using the vengeful nature of the 80 million spirits, a Demon Lord, the leader of [Grim Grimorie] thus summoned her to the world of Little Garden. However it was another few years in that she was properly released from the Ring her soul was attached to by the [Ouroborus] Demon Lord Alliance by Highness.

She was given control over her own community and met the other representations of the Pied Piper of Hamlin, Ratten and Weser. Together they formed the [Grim Grimoire Hamlin] and conspired with the [Ouroborus] to attack the [Salamandra] community.

Volume 2
Pest was one of the remaining survivors of the Grim Grimoire community, believed to have been annihilated by another stronger community. She arrives at the Fire Dragon Festival alongside her subordinates to recruit new members by force for a new community that she sets up, and wants the communities participating in the festival and Shiroyasha as her members, intending to kill them if they disagree. Her appearance in the North was arranged by Sandora's older Brother in an attempt to help his sister gain fame and experience in defeating Demon Lords.

Volume 6
During their time in the prison of Sandora's castle, Jin also promised to help her fulfil her wish after the Community finds its lost members causing Percher to swear her loyalty to him there and then.

Gifts
Black Death:  Black Percher's main Gift, the representation of the Black Plague itself that can kill anyone who breathes in the infected air. When not used at full power, the winds were strong enough to cause Leticia to fall unconscious, and when condensed can act as a shield to block the fires from Sandora and Divine Lightning from Black Rabbit's [Mock Divinity Vajra]. Using this same technique Percher can use the winds as a powerful attack.

Trivia

 * Percher is the cover girl for Volume 6
 * She is ranked a 5-digit demon lord.
 * Black Rabbit states that she is both a Demon Lord and a Deity.