Doshun Igasaki

Doshun Igasaki (伊賀崎道順) was a ninja who lived in the who, being of the Igasaki Clan, particpated in the defeat of the evil feudal warlord Gengetsu Kibaoni, who intended to unite Japan under fear, in 1571. He is an ancestor of the Last Ninja, Yoshitaka Igasaki, and by extension his grandchildren, the five Ninningers, both of whom would fight the reprisals of Kibaoni that would emerge over the following centuries.

Doshun Igasaki was acknowledged by Yoshitaka in his book I am the Last Ninja.

Behind the scenes
Doshun is infact a real historical figure, he was an intermediate-ranking  of the, , whom was also known by the name Igasaki Doshun (伊賀崎道順). The Igasaki Clan of Ninninger is named in homage to him, similar to the five protagonists of Ninja Sentai Kakuranger who were named after five legendary ninja.