This article is about a/an villain in Kamen Rider X.

Dr. Noroi (呪博士 Noroi Hakase): After King Dark's defeat, Dr. Noroi is revealed to be the leader of the Government of Darkness and friend of Keitaro Jin in Jouhoku University as a teacher. Destroyed in King Dark's destruction after being stabbed by X's Ridol Whip along with Scorpion-Geronimo Jr..