Isaac Kraken is a character from the anime series 'Saint Seiya.' He is one of Poseidon's Marine Generals, specifically the guardian of the North Atlantic Ocean. Known for his loyalty and sense of justice, Isaac was once a student at the same training ground as Hyoga, one of the protagonists. A tragic accident led him to become a Marine General. In the series, Isaac is portrayed as a formidable warrior who confronts Hyoga, creating a dramatic conflict rooted in their shared past and differing paths.