American orphan turned elite ninja, marries Namiko, and seeks vengeance after her murder.
Sensei trains Casey and recognizes his development as a martial artist.
Casey is adopted into Sensei's dojo and earns Sensei's respect through perseverance and dedication to bushido.
Casey and Namiko are married partners whose relationship is central to the escape and final conflict.
The character profile identifies Casey as Namiko's husband, while the plot describes them as a couple who return to Japan together.
Traxler initially treats Casey as a suspect rather than an ally.
Casey and Namiko are arrested after being framed for Professor Garrison's murder, and Traxler ridicules Casey during interrogation.
Their rivalry develops from dojo jealousy into a lethal vendetta.
Masazuka resents Casey's friendship with Namiko, nearly kills him during sparring, and later confronts him repeatedly.
Casey opposes Temple Industries while trying to rescue Namiko and recover the armor.
Casey storms Temple Industries, confronts its president, and later fights the organization's attackers.
Professor Garrison assists Casey in safeguarding the ancient armor.
Casey and Namiko keep the Yoroi Bitsu in Professor Garrison's university vault with his help.
Casey is temporarily opposed by the police investigation before the larger conspiracy is exposed.
Casey and Namiko are arrested, while Masazuka takes down several cops during the station attack.
Explore the full interactive character relationship map of Ninja