Yor Forger, originally Yor Briar, carries a complex history shaped by early tragedy. Orphaned in childhood, she assumed responsibility for her younger brother Yuri Briar. To financially support them, she became an assassin for the clandestine Garden organization, adopting the codename "Thorn Princess." This double life continues into adulthood, balancing a civilian job as an office clerk at Berlint City Hall with her lethal assignments. Seeking marital cover to avoid suspicion, she entered a fake marriage with Loid Forger, becoming the adoptive mother to his daughter, Anya Forger. This arrangement, initially a facade, developed into genuine familial bonds. Her appearance is distinctive: light skin, long black hair often secured by a headband, and striking red eyes. Her slender, curvaceous frame conceals immense physical strength. Civilian attire typically includes a red off-shoulder sweater dress, black tights, and brown ankle boots; her City Hall uniform is a green vest and skirt over a white shirt. As the Thorn Princess, she wears a form-fitting black dress with a rose choker, thigh-high boots, fingerless gloves, and a gold rose-motif headband, wielding stiletto-like daggers. Before marriage, this assassin attire served as her only formal wear; she later acquired additional clothing for family events like Anya's school interviews. Personality blends social awkwardness with lethal efficiency. Civilians perceive her as introverted, polite, even robotic due to minimal interaction and an aloof demeanor. She struggles with common sense, leading to gullibility—wondering if boogers improve coffee taste or misinterpreting idioms. As an assassin, she remains composed, courteously requesting "the honor of taking lives," justifying her work as eliminating evil to protect innocents. Fierce maternal instincts drive her protectiveness of Anya and Yuri, often triggering violence against perceived threats. Her assassin background skews problem-solving toward extreme methods, like contemplating murder for social inconveniences, though she consciously suppresses these impulses. Profound insecurities plague her domestic life. Believing she excels only at killing and cleaning, she feels inadequate as a wife and mother compared to Loid's household competence. This drives her to seek cooking lessons and strive for self-improvement. Alcohol intensifies her traits, causing exaggerated romantic embarrassment—nearly kicking Loid across a room when flustered—and illogical fantasies, like drunkenly attempting to "normally" murder him. Despite insecurities, she gradually becomes more expressive with colleagues, seeking parenting and relationship advice. Her combat abilities are formidable. Trained in assassination from youth, she specializes in martial arts, parkour, and weaponry, turning everyday objects into lethal tools. She possesses superhuman strength, speed, and reflexes, enabling feats like impaling skulls with daggers, smashing pumpkins barehanded, and outmatching trained fighters. High pain tolerance, poison resistance—even using pufferfish venom as a painkiller—and recovery from bullet wounds mark her durability. She occasionally struggles to control her strength, accidentally injuring Yuri or damaging objects. Swift tactical intuition aids combat adaptation, though she consciously limits herself during missions to avoid injuries that might separate her from the Forgers. Relationships define her development. Devotion to Yuri borders on overprotectiveness, once breaking his ribs in a hug. With Anya, she displays instinctive maternal kindness, bonding quickly despite inexperience. Her marriage to Loid evolves from transactional to genuine trust and affection; she grows jealous of rivals like Fiona Frost and fears replacement. She unintentionally achieves key objectives, like befriending Damian Desmond’s mother, Melinda. By the cruise arc, commitment to the Forgers leads her to consider leaving Garden, fighting assassins while subconsciously holding back to avoid career-ending injuries. Yor’s character evolves from viewing the Forger family as cover to cherishing it as her true home. Initially questioning her domestic worth, she later finds joy in Loid and Anya appreciating her efforts, like their praise for her cooking. She repeatedly affirms willingness to risk her life for them, even abandoning her assassin identity. This conflict—balancing a violent profession with a desire for normalcy—culminates in her resolve to protect her family at all costs, symbolizing her full embrace of the role she once pretended to play.