Iruma (known as Irma in original Japanese materials) leads the Assassins of Fang, the Queen's secret police force. Her primary mission is eliminating Queen's Blade contenders threatening stability under Queen Aldra. To maintain secrecy, she operates undercover as a cleaning lady in a slum district, earning the moniker "Strongest cleaning lady on the Continent." Few know of her existence. Her background includes significant trauma, having lost her family—particularly her brother—in a noble dispute. This shaped her cold, emotionless demeanor and aversion to relationships. After her loss, she became a disciple of the veteran mercenary Echidna, learning assassination techniques. Their relationship fractured due to a broken promise, leaving Iruma harboring resentment, a grudge fueling her actions. Physically, Iruma has light blue hair and light red eyes, standing approximately 167 cm tall. Her standard assassin attire is a non-uniform variant of the Assassins of Fang outfit, featuring higher-cut torso armor exposing the lower half of her breasts. In the *Unlimited* continuity, her design includes a black head bow, shoulder frills, a large red scarf with kunai attachments, a frilly white skirt, light grey thigh-highs, and heels. In combat, Iruma dual-wields a dagger and sword, emphasizing speed, agility, and stealth. She masters Echidna's "Black Rose" technique, parrying enemy attacks while countering with her dagger. Her skills include using throwing knives for ranged attacks and employing disguises to blend into civilian environments. Her assessed parameters are: Attack 2, Defense 1, Potential 4, Technique 4, Reach 2, Agility 4. Her character development centers on shifting loyalties. Initially tasked with assassinating contenders like Leina Vance, she abandons this mission after confronting Leina and instead attempts to kill Queen Aldra during the tournament. This rebellion leads to her defeat, sentencing to death, and rescue by Echidna. Her motivations intertwine revenge for her brother's death with disillusionment toward the Queen's rule. A notable contradiction emerges in her secret fondness for cats. She shows emotional vulnerability caring for strays, an interest she hides. This contrasts sharply with her otherwise ruthless tactics, including hostage-taking, torture, and threats to complete objectives. In the *Queen's Blade Unlimited* reboot, her visual design changes significantly, and her role adjusts to serving as Echidna's subordinate rather than the queen's assassin, though core personality traits remain consistent.