Gamov

Gamov is a bespectacled, green hat and coat wearing spy, who constantly shadows Ryu as the latter ventures through the Holy Vigoor Empire.

Throughout the game, he sets up Vigoor military forces against Ryu and observes their battles. He claims to know a lot about Rachel and the Dark Dragon Blade. Though working in cahoots with the Dark Disciple, he is decapitated by the latter with the Dark Dragon Blade at the end. It is revealed in Ninja Gaiden II, by finding a diary of a ninja called Izo in the chapter "Submit or Die", that he was the younger brother of Genshin.