Z23, originating as a Kriegsmarine Type 1936A-class destroyer, bore only a serial code instead of a traditional name. She pragmatically accepted this impersonal designation, acknowledging its convenience. Historically, she operated in Norwegian and French waters during World War II, performing escort duties and mine-laying operations before sustaining damage from British bombers in 1943; she was salvaged post-war. She possesses short platinum blonde hair featuring a black, red, and yellow ribbon with an iron cross motif and sharp blue eyes. Her attire includes a white double-breasted dress with silver trimmings over a black turtleneck, a dark blue tailcoat with yellow accents, black bike shorts, maroon ankle socks with garters, and red pumps. Accessories consist of a blue beret, black detached sleeves, white gloves, and a red and blue armband on her left shoulder. Personality-wise, she exhibits a serious and responsible demeanor, often acting as a stabilizing influence. She positions herself as an advisor or mentor figure, particularly toward other starter destroyers, though her efforts to maintain order frequently meet with limited success, leading to frustration when others disregard her authority. She demonstrates a strong work ethic and persistence in tasks. Within the Azur Lane Academy, she serves as a substitute teacher and advisor, guiding students through academic and extracurricular activities. Her responsibilities encompass classroom management, assisting with event preparations like sports club support and cultural festivals, and participating in leisure activities such as beach barbecues and hot spring maintenance. Despite her disciplined nature, she engages in social interactions like pillow fights and shared meals, revealing a capacity for camaraderie. Her relationships center on close bonds with fellow starter destroyers Javelin, Laffey, and Ayanami. These connections transcend factional boundaries between Azur Lane and Crimson Axis, frequently depicted through collaborative daily activities and mutual support. She maintains professional interactions with other shipgirls during joint tasks, such as cleaning assignments with Mikasa and Taihou or assisting Bismarck with social engagements. In combat, she utilizes four 15cm guns, anti-aircraft armaments, torpedo systems, and depth charges. Retrofit enhancements unlock "Destruction Mode," enabling specialized combat capabilities every 20 seconds: a barrage attack, torpedo deployment, energy shields blocking incoming fire, and temporary main gun critical hit assurance. Standard abilities include "Iron Blood Vanguard," periodically boosting firepower, and "All Out Assault," triggered after specific main gun usage. Her retrofit process requires progressive enhancements across multiple levels, improving health, firepower, torpedo efficiency, anti-aircraft capabilities, and evasion. Equipment optimization focuses on destroyer or light cruiser main guns, torpedoes, anti-aircraft weaponry, and auxiliary gear.