Demon World East

Dek (デク, Deku)

Voiced by: Taichi Yones (Japanese); Kyle Hebert^[5] (English)

Staz's right-hand man. He is often the one leading the gang when outside and patrolling whenever Staz is busy with his Japanese media.^{Ch. 1, Vol. 1 extra}

Saty (サティ, Sati)

Saty is the manager of the Third Eye Cafe in the demon world. She and Mamejirou have clairvoyant powers thanks to her third eye. She does not speak, relying on Mamejirou to communicate her thoughts. She is able to stop Staz and Mamejirou from fighting with an intimidating stare.^{Ch. 2, Vol. 2 extra}

Mamejirou (豆次郎, Mamejirō)

Voiced by: Chiwa Saitō^[4] (Japanese); Cristina Vee^[5] (English)

A three-eyed talking weasel-like demon who works at the Third Eye Cafe along with his partner Saty. He is very talkative. He and Saty have clairvoyant powers.^{Ch. 2} He appears regularly inside the jacket covers for the Japanese graphic novel publications.

Mimic Yoshida (ミミック吉田, Mimikku Yoshida, alt. Yoshida the Mimic)

Voiced by: Kazutomi Yamamoto^[4] (Japanese); Max Mittelman^[5] (English)

Yoshida is a doppelganger who joins Staz's gang, serving as Staz's double whenever he is away.^{Ch. 2, 3}

Demon World West

Kiji (キジ)

Voiced by: Shūsaku Shirakawa (Japanese); Matthew Mercer (English)

Wolf's underling. He has light hair and wears a black turtleneck.^{Ch. 8}

Tobi (トビ)

Voiced by: Kenji Roa (Japanese); Todd Haberkorn (English)

Wolf's underling. He wears a knit cap and has dark hair.^{Ch. 8}

Franken Stein (フランケン・シュタイン, Furanken Shutain)

Voiced by: Tetsu Inada (Japanese); Patrick Seitz^[5] (English)

A scientist within the Demon World, named after the scientist who had stitched body parts of humans together, and whom he calls his ancestor.^{Ch. 12} He is an expert on demon physiology and conducts experiments on demons. He is interested in experimenting on Fuyumi,^{Vol. 2} He had worked on an experiment to create a supreme body based on stitching together the body parts of demons; the result was Papradon Akim.^{Ch. 12}

Demon World Acropolis

Braz D. Blood (ブラッド・D・ブラッズ, Buraddo Dī Burazzu)

Voiced by: Ryōhei Kimura^[4] (Japanese); Johnny Yong Bosch^[5] (English)

Staz and Liz's older brother. He is the one who wrote the book of resurrection that Staz and the others believe can bring Fuyumi back to life. When they were younger, he conducted experiments on Staz to unlock his true potential. He later sealed Staz's powers away with a magic bullet that he shot into Staz's heart.^{Ch. 9} While his intentions are always under suspicion from Staz, his motive is to dethrone Wolf Daddy's reign as King of Acropolis,^{Ch. 25} since Wolf Daddy had killed his father.^{Ch. 29} He orchestrates the creation of Papradon Akim and has Staz test his strength on him. One of his abilities is to manipulate blood.^{Ch. 27}

Liz T. Blood (ブラッド・T・リズ, Buraddo Tī Rizu)

Voiced by: Yūka Nanri^[4] (Japanese); Sherry Lynn^[5] (English)

Liz is Braz and Staz's younger sister. She has a great respect for her eldest brother Braz and a deep disdain for her older brother Staz. This is partly because Staz ran away from home and partly because Braz would spend all his time on Staz. She is the jailer of Acropolis and has the power to judge and imprison demons in her own personal dungeon known as Liz's Toy Box.^{Vol. 2}Liz comes to care for Staz and admire him after seeing his real power (that Braz sealed). She takes a liking to Fuyumi after finding that Fuyumi isn't afraid of her or seeking to win her favor.^{Ch. 19}

Beros (べロス)

Voiced by: Masumi Asano^[6] (Japanese); Julie Ann Taylor^[5] (English)

Beros is the peacekeeper of the Acropolis Police.^{Ch. 20} She is in the form of a girl wearing a visor cap, a black top and uneven-length shorts for uniform, and she has a tail whose end is a snake head. She uses a collar called an Underdog Choker which restricts the wearer from using magic.^{Ch. 21} Outside of police activities, Beros is part of a music band where she plays bass guitar.^{Vol. 6 extra, Vol. 10}

Wolf Daddy (ウルフダディ, Urufu Dadi)

Voiced by: Norio Wakamoto^[7] (Japanese); Richard Epcar^[5] (English)

King of the Demon World Acropolis.^{Ch. 20, 25} He is Wolf's biological father and killer of the Blood siblings' father Richarz, the previous king.^{Ch. 29} In the later story, it is revealed that Wolf, Richarz and Heads are good friends, and that he had killed Richarz at the latter's request when he had been infused with Grimm's magic essence.^{Vol. 9-10} He was part of a secret task force called the Demon Colors under the previous king where he went under the name Red Wolf.^{Vol. 11}

Goyle (ゴイル, Goiru)

Voiced by: Daisuke Kishio^[8] (Japanese); Ben Pronsky^[5] (English)

Captain in the Acropolis. He wears glasses and has a barbed tail.^{Ch. 25} He works with computers.^{Ch. 26, Vol. 6 extra} He uses anger to summon and to power up his demon pet creature named Angry Spear.^{Ch. 26, 36} He also has a power called Cool Decision, which lets him freeze his opponent if they touch his head.^{Ch. 29, 37}

Papradon Akim (パップラドン・アキム, Papladon Akimu)

Voiced by: Kōji Yusa^[4] (Japanese); Lucien Dodge^[5] (English)

He is a monstrosity created by Franken Stein stitched up by the body parts of demons. In order to obtain stronger parts for his body, he escaped from Franken's lab via spatial magic and began hunting and killing demons with exceptional magical properties in order to harvest their limbs.^{Ch. 12} Akim's true form is that of a phantom and he uses magic to manipulate the separate body parts which make up his physical form.^{Ch. 14} Akim's entire creation was orchestrated by Braz, who anonymously delivered a demon corpse to Franken to serve as the central container for Akim.^{Ch. 17, 20} The corpse was later revealed to be a spy from Wolf Daddy named Pantomime.^{Ch. 25} Akim's heart is placed in a new vessel that turns out to be Braz's father Richarz, but Akim is unable to control the body and only serves as a power source to keep the heart beating.^{Ch. 34} Akim later comes back to life, taking the heart out of Richarz's body, and absorbing Grimm's magic to take over Demon World Acropolis.^{Vol. 9-10}

Team Fearless (チームフィアレス, Chīmu Fiaresu)

A group of assassins sent by Neyn to hunt down Staz. Although they have never actually killed a vampire before, they hope that this would elevate their standing at the Acropolis. They consist of: Shamkid "the leader" who can transform into a cat and can foretell a person's actions after having a piece of their hair; Sam "the veteran" who sports a ponytail and an eyepatch, and wields a katana; Jasmine "the looks"who is dressed as a jiangshi, speaks Chinese, and wields a claw weapon; Roy "the brain" who wears a striped shirt, handles navigation for their team airship, and whose special ability includes falling asleep to enable a "chat room" that allows the team to communicate with each other telepathically; and Rando "the brawn" a mummy who was able to capture Fuyumi inside his body.^{Vol. 7} After Akim takes over the Acropollis, they join Akim's staff as an elite squad where they help cook and clean, while secretly thinking of ways to depose him.^{Vol. 11}

Richarz (ブラッド・リチャーズ, Buraddo Richāzu)

The father of the Blood siblings. He had lost the throne when he was killed by Wolf Daddy who crushed his heart, but ten years later, he is brought back to life by Braz using Akim's heart.^{Ch. 34, 38} However, Akim is able to grab the heart back.^{Vol. 9} It is revealed that he, his wife and Wolf Daddy were part of the original squad that tried to contain the old king Grimm but he had lost his wife and his heart got corrupted by Grimm's essence, so he asked Wolf Daddy to kill him.^{Vol. 9}

Kelly and Burgundy (ケリーとバーガンディ, Kerī to Bāgandi)

Kelly and Burgundy are female demon servants created by Akim infused with Akim's Grimm magic and some of the top organs harvested by Akim. Kelly has light hair and dark skin, and dresses with a tank top with a zig-zag stripe, a cheetah animal print wrap skirt and black pants. Burgundy wears a mask, rabbit ears and tail. a single strap top, black bikini bottom, and thigh-high knee socks. Their mission is to scour the Demon World territories and grab the best organs to harvest.^{Vol. 10-11}

Amber (アンバー, Anbā)

Amber was created by Akim as another demon to fight with him against the blacklisted demons. He has a mohawk hairstyle. He was rated a little stronger than the two demon girls, but was still unable to beat Akim in their sparring match.^{Ch. 60-61}

Dimensional Highway

The Dimensional Highway is one of the seven wonders of the demon world. It is described as a labyrinth of countless doors.^{Ch. 21}

Knell (ネル, Neru)

Voiced by: Yūki Kaji^[9] (Japanese); Erik Scott Kimerer^[5] (English)

Knell is a transporter and takes on jobs to transport goods to different locations.^{Ch. 21} He is the younger brother of Bell, and fellow spatial magic user.^{Ch. 21-22} He was born after Neyn had fused so his demon powers are not as strong as Bell's.^{Ch. 28}

Neyn (ネイン, Nein)

Voiced by: Kotono Mitsuishi^[10] (Japanese); Wendee Lee^[5] (English)

Bell and Knell's mother. She has dark hair,^{Ch. 21} but originally had light hair when Bell was a child.^{Ch. 27} Fourteen years ago, when she met her doppelgänger counterpart in the human world, who happened to be Fuyumi's mother, she fused with her and became one person (she has heterochromia). She had since agreed to live in the demon world with Heads.^{Ch. 24, 27} She and Braz are e-mail friends.^{Ch. 25}

Heads (ヘッズ, Hezzu)

Voiced by: Keiji Fujiwara^[11] (Japanese); Keith Silverstein^[5] (English)

Heads Hydra is Neyn's husband and Bell and Knell's father. Initially appearing as a flying multi-headed serpent, he assumes a human shape where he typically wears a "I ♥ Neyn" T-shirt and pajamas that he had during their honeymoon.^{Ch. 28}

Other characters

Yanagi (柳)

Voiced by: Eiichiro Tokumoto (Japanese); Matt Mercer (English)

Fuyumi's father.^{Ch. 3} He was aware of the Demon World's existence following his wife's fusion with Neyn and decided to give up being with her to Heads Hydra to instead raise Fuyumi on his own.^{Ch. 28} He has a Demon World counterpart who works as a butler to the Hydra family.^{Ch. 27}

Katy (ケイティ, Keiti)

Wolf's mother and Wolf Daddy's estranged wife. She lives on Earth where she is a school teacher. Although Wolf Daddy covets her powers, Katy says her time on Earth has diminished them so she is willing to teach Wolf how to use his powers so she doesn't have to return to the demon world.^{Ch. 35}

White Step (ホワイトステップ, Howaito Suteppu)

White Step is a colleague of Wolf Daddy; they were in a secret task force called the Demon Colors under the king. He is a human who has survived in the demon world using his dodging skills and living off the grid. He trains Staz and Wolf in the art of dodging, and agrees to let the Blacklist be exposed if it will protect his demon disciple Pati. He resides in Demon World North.^{Vol. 11}

Pati (パティ)

White Step's demon disciple who appears as a boy. Although he appears to be rather meek, he transforms into a beast. His name was kept off the Blacklist when it was revealed as part of White Step's negotiations with Wolf Daddy.^{Vol. 11}

Blacklist demons

The blacklist demons are ones who are not bounded by any demon territory and have gone off the grid. They are very strong demons that are coveted by Akim. Outside of Pati, Wolf Daddy has brought in the following demons:

• Steel Evil Jack is a blacklisted demon who is regarded as the most notorious criminal in the Demon World. Wherever he goes, there are evacuation alerts. He has gone into prison where he waits for a suitable challenger.^{Ch. 55} He has a special transformation called the Berserker Lurk.^{Ch. 57}
• Shteyn Doji is a blacklisted oni (ogre demon) who once united many ogre tribes. He aspires to be a singer, but his voice knocked out five thousand ogres, that he became despondent and exiled himself to an island.^{Ch. 55} His voice paralyzes opponents to their spot.^{Ch. 57}
• Elforess is a blacklisted elf demon who protects a forest over in Demon World West. No one has ever seen her, prior to her arrival with the blacklist group.^{Ch. 55}

Volumes

Bloody Brat