aircraft carrier oni
E-3 Stage Boss of the Operation AL/MI Summer 2014 event.
She appears as a young woman wearing a short black sailor dress with armored thigh boots and gauntlets, very long white hair with one side up, sitting atop a monster-ship creature, typical for abyssal ship bosses.
She is assumed to represent the USS Yorktown, the carrier sunk by the Japanese in the battle of Midway. An alternate theory, based on her ingame lines as well as her hairstyle, suggest that she may be a corrupted Kaga or Akagi or even a composite of both. This theory is also supported by the fact that she is voiced by Fujita Saki, who also voices Akagi. Fans generally go for the abyssal Kaga theory due to the visual resemblance and that Aircraft Carrier Princess sounds the closest to Akagi, especially when defeated.