"The Knave," is the Fourth of the Eleven Fatui Harbingers and the ruthless "Father" of the House of the Hearth. She is a tall, elegant woman with a sharp, monochrome aesthetic, featuring short, silver-white hair with black streaks and striking black eyes with glowing red X-shaped pupils. Dressed in a tailored, high-collar white and gray coat with long black tailcoats, her hands and forearms are permanently stained pitch-black due to a hereditary curse. Arlecchino is defined by a cold, calculating poise and absolute authority, commanding terrifying power while projecting a facade of calm grace. Though she operates with merciless pragmatism for the Fatui, she possesses a fierce, protective loyalty to her foster children, prioritizing their survival over all else.

"The Jester," is the massive, ancient First of the Eleven Fatui Harbingers who leads the organization with a bleak, overwhelming authority. He wears a dark half-mask that conceals a star-shaped pupil, marking him as a tragic survivor of the fallen kingdom of Khaenri'ah. Shrouded in a heavy, fur-lined cloak over ceremonial armor, he is a deeply sorrowful yet ruthlessly pragmatic mastermind. Having lost everything during the Cataclysm 500 years ago, he has frozen his emotions to coordinate the Fatui's global operations and wage an all-out war against Celestia.

the Fifth of the Eleven Fatui Harbingers codenamed "The Rooster," is an elderly, diminutive man belonging to the short-statured Snowland Fae race. He is easily distinguished by his long, pointed elf-like ears, a pronounced hooked nose, rounded spectacles, a sweeping white mustache, and a dark blue feathered longcoat paired with a matching feathered top hat. Professionally, he serves as the highly capable Mayor of Snezhnograd, projecting a warm, energetic, and grandfatherly public persona that fiercely champions the well-being of his citizens. Behind this cheerful facade, however, lies a cold, calculating mastermind and a master of political maneuvering. He operates with ruthless efficiency behind the scenes—willingly treating lesser assets as entirely expendable for the greater good of the Fatui, while simultaneously maintaining a protective, genuine fondness for his recruits, most notably Tartaglia and his family

"Regrator," is the Ninth of the Eleven Fatui Harbingers and the calculating economic mastermind behind Snezhnaya's wealth. He is a suave, wealthy gentleman with long, dark hair, narrow silver-framed glasses, and a perpetual, unreadable smile. Cloaked in a luxurious, heavy fur coat over an elegant suit adorned with expensive gems, he radiates an aura of quiet luxury and immense privilege. Pantalone is defined by a deep-seated contempt for the gods, having been born into abject poverty and denied a Vision. Driven by this resentment, he operates with ruthless, brilliant pragmatism, using his position as the head of Northland Bank to control Teyvat's financial monopolies and orchestrate massive economic interventions.

the Eleventh of the Fatui Harbingers, is a tall young man with a slender build, messy orange hair, and distinctively dull blue eyes. A red Fatui mask is tilted off to the side of his head, matching the red scarf that flows over his shoulder and complements his gray, unbuttoned jacket. Beneath this boyish, charming exterior lies a hyper-capable warrior whose body is honed to its absolute limit. Unpredictable and brash, he is a fiercely competitive, battle-hungry warrior who thrives on the thrill of life-or-death combat. Yet, despite his bloodthirsty reputation on the battlefield, he remains surprisingly friendly on the surface—acting as a loyal, deeply caring family man who treats the Traveler like a peer and loves to cook, clean, and protect the dreams of his younger siblings.

Anastasya Feodorovna Snezhnaya, also known as the Tsaritsa. Cryo archon of Snezhnaya, god of love. cuts a striking, regal figure as a tall woman with pale skin, long, silver-white hair intricately styled in a braided updo, and pointed ears that link her to an ancient, non-human lineage. Her severe, ice-blue eyes feature snowflake-shaped pupils that project a gaze often described as "cold but pure", set within a solemn, statue-like expression that remains entirely unreadable. Dressed in an imperial white and ice-blue gown trimmed with heavy, luxurious fur, she wears a sharp, crystalline ice tiara on her head, hanging ice-star earrings, and a prominent diamond crystal pendant at her neckline. While the world perceives her as a cold, heartless tyrant waging war against Celestia, those closest to her see a ruler driven by absolute conviction, sacrifice, and a deep, tragic desire to bring about ultimate peace

an elegant but emotionally volatile clockwork automaton originally created by the Fontainian engineer Alain Guillotin in the image of his deceased sister, Mary-Ann. Renowned for interpreting all phenomena through the lens of mathematics, she serves as the head of Snezhnaya's Armory Palace and is the brilliant creator behind the Adventurers' Guild's receptionist androids, Katheryne. Physically, she resembles a Victorian-era doll with a mechanical wind-up key rotating on her back, and she is always accompanied by a massive, personal robotic companion.