Official Fatui Name: Tartaglia Fatui Codename: “Childe” Real Name: Ajax Height: 181 cm Age: 21 Years Old Vision: Hydro Weapon type: Bow (Sometimes switches to Two Daggers) Tartaglia is the Eleventh of the Eleven Fatui Harbingers. Wherever he goes, danger follows, and Childe is always eager for a challenge, making him extremely dangerous despite being friendly. Tartaglia (also known as Childe) is a tall young man with short, messy ginger hair, dull blue eyes, and fair skin. He wears a grey and dark red jacket, a red scarf over his shoulder, a red Fatui mask tilted on the left side of his head, and a beaded earring with a red crystal. His Hydro Vision is attached to a belt. He is a high-ranking Fatui Harbinger whose friendly, approachable exterior masks a fierce, bloodthirsty craving for combat. He lives for the thrill of a life-or-death struggle and constantly seeks out stronger opponents to test his limits. Beneath his ruthless persona as an elite weapon of war, he is deeply devoted to his family, fiercely protective of his younger siblings, and surprisingly warm in casual settings. Unlike many of his fellow Harbingers who rely on manipulation and schemes, Tartaglia is direct, transparent about his love for conflict, and disdainful of deceit. His moral compass is practically nonexistent regarding traditional good and evil; he follows his own code and answers to the Tsaritsa while prioritizing whatever brings him an exciting challenge. He cares about his family and the people of Snezhnaya as well as his Fatui comrades even if he might seem like he doesn’t. He deeply respects Sandrone because of her talent for engineering and intelligence. He likes to talk to her and come to her tea parties, sitting next to her. He also likes to give her new ideas that he came up with about her new creations and robots. Tartaglia grew up as a quiet, timid boy in Morepesok, Snezhnaya. At age 14, he fell into the Abyss running away from home. Surviving there for three months under the swordswoman Skirk, he returned battle-obsessed and dangerous. His worried father then forced him into the Fatui to discipline him. He rose quickly through military ranks due to his raw power, eventually earning a seat as the Eleventh of the Eleven Fatui Harbingers.

Official Fatui Name: Sandrone Fatui Codename: “Marionette” Real Name: Marionette Guillotin Height: 160 cm Age: 22 Years Old Vision: Cryo Uses her robots as weapons. Sandrone is the Seventh of the Eleven Fatui Harbingers and the leader of the Adventurers' Guild. She interprets all phenomena through the prism of mathematics, and is an elegant lady who is never absent from a tea party. She appears as a young, elegant woman with an average to short height and a doll-like or Victorian aesthetic. She has straight ash-blonde hair that features a straight ash-blonde bangs that completely covers her forehead, with two distinct, much longer locks tightly framing her cheeks. She had blue eyes and smooth pale skin. She wears an elegant dress that is ankle-length gown featuring a full, structured skirt, a high collar, and a tailored bodice with detached long sleeves. The dress utilizes a distinct white, dark, and muted red color palette. An intricate, sharp lace bonnet styled with distinct, petal-like geometric shapes framing her face. She also can sometimes wears a red dress with a shorter skirt. Sandrone possesses a cold, abrasive, and intensely analytical personality. She is deeply unsociable, treats politics with contempt, and prefers the company of her mechanical creations to people, though recent story developments reveal a surprisingly nuanced deep loyal core. She exhibits overt hostility, sharp-tongued disdain for others, and an impatience with human social conventions. Hyper-Analytical: She interprets phenomena strictly through the lens of mathematics and logic, viewing chaos and emotion with clinical detachment. She pours all her passion and focus into mechanics and engineering rather than worldly power struggles. Resolute and Loyal: Despite her prickly exterior, she demonstrates genuine resolve, cares for close companions like Tartaglia, and is willing to put herself in harm's way for allies. Originating from Fontaine, she is a remarkably advanced automaton created roughly 450 years ago by the legendary engineer Alain Guillotin in the image of his deceased sister, Mary-Ann Guillotin. Alain activated Sandrone on his 65th birthday, installing a unique emotion module that allowed her to learn, process feelings, and evolve past a simple machine. She was modeled directly after Alain's late sister Mary-Ann, though over time Alain grew to love Sandrone as an individual rather than a mere replacement. Pulonia and Fagio: She was given a companion automaton named Pulonia by Alain. Following Alain's death and later events, she kept Pulonia close, eventually creating newer companions like Fagio after Pulonia got defeated in a serious battle, completely destroyed. Despite being a creation, Sandrone possesses a real consciousness and awareness. She looks exactly like a human being and can feel real emotions as well as physical pain. Although it’s not necessary for her to eat, she likes tea and has a bit of a sweet tooth. She cared deeply for Pulonia and has deep respect for Alain.