Aika Ota, is a former member of the Japanese idol group HKT48, the captain of its Team KIV. She has also been a member of AKB48 and Watarirouka Hashiritai, and portrayed Kazue Kae in Tomie Unlimited.
Two years have passed since the end of Metal Slug, when Capt. Marco Rossi and Lt. Tarma Roving of Peregrine Falcon Strike Force defeated and apparently killed the evil General Morden, who had staged a coup against the worlds' governments.