Marina Constantinescu

Marina is a third year student and the overall commander (also called vataf) of Count High School, she commands a T.4 (Panzer IV Ausf.G).

Marina is a relatively short girl with long ashen hairs and light brown eyes, she is seen wearing Count's Sensha-dou uniform during matches with black high socks, a black cape and an awry WW2 Romanian field cap. She wears the same cape with her school uniform.

(Source: GuP Fandom Wikia)