Aika Sumeragi

She is considered to be one of the best in the business. She was raised as a test subject by her scientist parents who died in the catastrophic earthquake. She was protected by the bustier made by her parents and thus survived. She was then picked up by Aida Gozo, who raised her, and later on she works in Gozo's office as a Salvager. Aika possesses a unique battle suit made out of "ultranate" (or more accurately just "alternate metal" from the katakana オルタネートメタル),