Quanxi, also known as The First Devil Hunter, is a Crossbow Devil hybrid and renowned devil hunter from China. Quanxi is a tall woman with white hair tied back in a ponytail. She wears an eye patch over her right eye. She is also seen wearing a black tank top tucked into a high-waist pants with a large belt during her mission to retrieve Denji's heart. When in combat Quanxi dons a set of sheathes on her back, holding up to three swords which resemble Dao. In her transformed state, Quanxi's teeth sharpen along her head, transforming into hardened arrows with wide curved horns taking the shape of a bow on the side of her head. Arrowheads stick out of her neck while her forearms grow gloves with sharpened bow-shaped attachments on them. Quanxi is calm and stoic, having no shame in discussing business while she's in bed with her harem of fiends, showing little emotion even as her girlfriends fawn over her. However, 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, and not attacking them even after they have been turned into dolls at the cost of her own safety. Quanxi is ruthlessly pragmatic in combat, preferring to throw her enemies outside of the battlefield in order to efficiently cut down their numbers and remove distractions. Similarly, after being cast into Hell, she instantly requested a ceasefire in hostilities so as to determine their situation. This alliance continued until the moment the threat was contained, at which point she immediately attacked once again. Though her attacks are swift and brutal, she seems to prefer leaving those other than her target alive, as highlighted when she knocked Aki and Angel Devil unconscious and offered to spare Power's life. Quanxi seems to have a past amongst the bureau, being referred to by Santa Claus as the 'First Devil Hunter'. This suggestion is furthered by her conversation with Kishibe, which hinted at a past friendship between the two.