Hyuuga, a mental model embodying the Fleet of Fog’s Hyuuga battleship, originates from the reconstructed Ise-class World War II hybrid vessel combining battleship and aircraft carrier capabilities. Her humanoid form manifests as a young woman with striking amber eyes and chestnut-brown hair extending to mid-back, its ends curling softly inward. She dresses in a dark sweater, a lab coat, and opaque stockings, often paired with a dark-gray mini-skirt, and sports a monocle over her right eye.

As a warship, she wielded an arsenal of photon cannons, missile systems, and the devastating Super-Graviton Cannon. Her hybrid hull featured an aft flight deck, enabling dual functionality as a carrier and battleship, while her Wave-Force armor repelled even direct strikes from Corrosive Warhead Torpedoes.

Once commanding the Fleet of Fog’s First Oriental Fleet, Hyuuga defected following her defeat by the submarine I-401. Aligning with the Blue Steel faction, she took charge of Iwo Jima’s port operations, leveraging her engineering prowess to overhaul the base’s infrastructure. She engineered advanced mining drones to harvest resources, fueling both facility upgrades and the creation of a robotic defense force, and showcased her technical mastery by reconstructing the heavy cruiser Takao.

Hyuuga harbors fervent admiration for I-401’s mental model, Iona, whom she reveres as a divine tactician. Her devotion surfaces in theatrical gestures and exuberant antics, yet she remains a steadfast strategist and ally, pivotal to Blue Steel’s combat and logistical endeavors.

Her persona blends analytical ingenuity, tactical loyalty, and adaptability, reflecting her evolution from a frontline warship to an indispensable innovator within her newfound alliance.