Iwao Himuro

Iwao Himuro (氷室 巌) is the main antagonist of Shin Kamen Rider: Prologue and the head of ISS and a major player in the syndicate. He appears to be a kind gentleman, but is truly a heartless man. He is slaughtered by Shin after he guns down Ai.

Portrayal
Iwao Himuro was portrayed by Daijiro Harada (原田 大二郎).