Also known by her full name Fiolina "Fio" Germi, the main female protagonist of the Metal Slug series. She is a member of the Regular Army's S.P.A.R.R.O.W.S.
She has a very childish and cowardly personality but is considered a senpai to Kasamoto Eri, a fellow S.P.A.R.R.O.W.S. officer.