Quanxi

Quanxi is a devil hunter from China.

Appearance
Quanxi is a tall woman with hair that she has tied back in a ponytail. She wears an eyepatch over her right eye.

Personality
Quanxi is a calm and stoic, having no shame at discussing business with a man while she's in bed with her harem of fiends and showing little emotion even as her girlfriends fawn over her. She does deeply care for her fiends, making her one request for a reward to be that they are given human rights and a basic education.

International Assassins arc
In China, Quanxi is in bed with four fiends as a member of the Chinese military gives her a job to go to Japan and capture the Chainsaw Devil. He says that the general will authorize any reward for her work due to the danger of the mission. Quanxi asks her fiends what they want and they respond with donuts, blood and Halloween. Quanxi tells the man that she wants her girls to recieve human rights and a a basic education and the man tells her that they'll look into it, provided she succeeds.

In Japan, Makima discusses with Kishibe about the various threats that are coming from overseas including a rumor that Quanxi is on her way. Kishibe says that he isn't keen to fight her and that she'll be tricky but there is no use in taking precautions against her.

Quanxi arrives in Japan and visits a sushi restaurant with her fiends. She announces that she's out of energy for the day so she'll resume the mission to capture Denji tomorrow.

She ends up having sex with her fiends all night long making them exhausted the next day and after they learn that Santa Claus is also in the area they decide to put off getting involved until tomorrow again.

Quanxi and her fiends arrive through a back alley near the department store where Denji and his bodyguards are under assault by Santa Claus. She approaches a group of devil hunters who were trying to reinforce Denji's group. Quanxi makes a comment in Chinese to let her fiends know that they should clean up the mess that will be left behind. She unsheathes her sword and after crouching low launches into a sprint that takes her through the devil hunters and army of dolls, decapitating or dismembering all of them at high speed. Aki sees Quanxi's attack through his future sight and shouts a warning to Angel Devil and Nakamura. He manages to get his blade in between Quanxi and the Angel Devil, saving the Angel Devil's life but Nakamura is decapitated and both Aki and the Angel Devil are knocked unconscious.

Abilities
Quanxi is an extremely powerful fighter, with Kishibe declaring that if the entirety of humanity came together in a bare-knuckle fighting tournament, Quanxi would take first place.

Physical Abilities
Immense Strength: Quanxi possesses a level of strength that has been described by Hirofumi Yoshida as being beyond what a human is capable of. Wielding swords she could cut through dozens of humans and dolls without slowing down and only stopped once her weapons were destroyed by the force of her own attacks. Even a blocked strike from her was enough to knock out both Aki Hayakawa and the Angel Devil.

Immense Speed: Quanxi possesses a ridiculously superhuman level of speed. She could disappear from the sights of five devil hunters by blitzing past them and cut through an army of dolls created by the Doll Devil, dismembering or decapitating dozens of them before the original five devil hunters realized they had already been killed. Only Aki Hayakawa who could percieve the future through the powers of the Future Devil was able to react to her high-speed attack and block it at the last moment.

Skillset
Hand-to-Hand Combat: Quanxi is a skill fighter in hand-to-hand combat, with Kishibe considering her to be one of the best in the world.

Swordswomanship: Quanxi wields multiple blades in combat, swapping them out as they're destroyed by the force of her own attacks. Combined with her high speed she can cut through entire crowds of enemies at high speed but her skill with facing other armed opponents is unknown.