The Iga ninjas
are a group of ninjas that work under Hattori Hanzo.
They are skilled assassins that fight for the pride of Iga. The ninja whom
player controls is instead revealed to be a clumsy Koga ninja who accidentally
separated from his clan's forces in Edo castle and prematurely infiltrates
Ritenkyo amidst the Iga forces. He was unaware of his predicament until Hanzo
congratulates his troops on their victory.
The name of the particular ninja used by the player in Warrior's Rage is
"Gyakuten Ippatsuou" and is 34 years old. His odd name is actually a
homage to the Gyakuten!