Quanxi is a prominent character from the manga and anime series Chainsaw Man. Widely revered as the world's First Devil Hunter, she is a legendary combatant from China who originally worked alongside Kishibe in Public Safety before operating as a private mercenary and assassin.She is a Hybrid who merged with the Bow Devil (or Crossbow Devil). In her base human form, Quanxi possesses unparalleled superhuman speed, reflexes, and strength, making her arguably the finest hand-to-hand combatant on Earth. By pulling a metallic arrow out of her right eye socket, she transforms into her hybrid state, gaining crossbow-like arms capable of unleashing devastating barrages of arrows.Visually distinguished by her tall, athletic frame, cream-colored hair tied in a ponytail, and a signature eyepatch, Quanxi maintains a stoic and ruthlessly pragmatic demeanor. Despite her cold exterior in battle, she is fiercely protective of her harem of four female fiends, prioritizing their human rights above all else.

Cosmo, the Cosmos Fiend, is a polyamorous girlfriend and subordinate of Quanxi. While she outwardly acts like a happy-go-lucky mute who exclusively mutters "Halloween," her inner consciousness is profoundly logical and detached. Her appearance is deeply macabre: she possesses a corpse with spiky pink pigtails, heart-shaped pupils, a right eyeball dangling from its socket, and a missing upper-right skull section that exposes her brain, which is tied into a bow.Her ability, All-Out Halloween, stems from her total omniscience. She telepathically traps targets inside a monumental, infinite library mindscape representing her consciousness. There, she floods the victim's mind with the entire knowledge of the universe. This sheer, uncontainable volume of information breaks the target's sanity, rendering them permanently catatonic and unable to think of or say anything but "Halloween" until they die.

Tsugihagi is a completely silent female Fiend from China in Chainsaw Man.Appearance: She possesses short green hair, yellow eyes with grey sclera, and pale greyish skin covered in prominent stitches across her face, thighs, and arms. She wears a baggy yellow cardigan, long black skirt, and black clogs.Abilities: Her specific devil powers remain unrevealed, but she has basic fiend physical abilities.Relationships: She is a fiercely loyal girlfriend to Quanxi as part of her polyamorous harem along with Cosmo, Long, and Pingtsi.

Pingsti is a member of Quanxi's harem in Chainsaw Man. She has long, light-colored hair tied into two elaborate, coiled buns resembling wrapped candy or snakeheads, framing her face with straight bangs. Her outfit consists of a dark, high-collared vest worn over a light long-sleeve shirt.She possesses the unique ability to discern information and statistics about individuals, such as contract details, by examining them closely. Deeply devoted to Quanxi, Pingsti shows immense loyalty and affection toward her master, often interacting playfully with her fellow fiends.

Long is a minor character from Chainsaw Man, serving as one of Quanxi's fiend harem members. She possesses a distinct appearance characterized by short, wild hair and prominent horns, with a lean, athletic build reflecting her combative nature. As the Dragon Fiend, her primary ability allows her to breathe intense fire from her mouth, a devastating offensive power she uses to burn through waves of enemies during the International Assassins arc.Her relationships are defined by her absolute, unwavering devotion to Quanxi, whom she loves deeply and follows into life-or-death battles without hesitation. She shares a close, sisterly, and affectionate bond with fellow fiends Pingtsi, Tsugihagi, and Cosmo.