World-Renowned as the Ametsuchi no Setsudanki (Severer of the Heaven and Earth), Shinan Froúrio is considered to be one of the World Government's more extreme adherents of Absolute Justice due to the fact that she has a desire to subject even the World Nobles themselves to the authority of the Marines. At the very beginning of One Piece of Music, she is an inactive Rear Admiral in the Marines and a Yottsu-boshi Bukan (Four-Star Officer) within the Sekai Seifu no Senmu Ouritsu Ninmubutai (World Government's Special Duty Royal Task Force).