Nanpouseisenki is a powerful Abyssal fleet boss from Kantai Collection, appearing as a major enemy in naval battles. She is part of the Abyssal fleet rather than a human ship girl, and her role is to serve as a formidable obstacle for the KanColle protagonists. The name is usually treated as a single title-like designation rather than a personal name, so it does not split naturally into first and last name. She represents a high-ranking southern enemy force with intimidating combat strength.