Three concepts pervade Islamic apocalypticism across centuries: the Mahdi, the Antichrist (Dajjal), and Armageddon. These narrative elements provide militant movements with three essential tools: legitimization of authority through messianic claims, demonization of enemies as cosmic evil, and justification for violence through apocalyptic warfare. Mark Juergensmeyer's concept of "cosmic war" posits that when violence acquires a metaphysical framing, the self becomes God's infallible instrument while the other transforms into the ultimate cosmic enemy. This represents the most extreme form of othering: casting oneself as a divine agent and one's adversary as Satan's manifestation, with eschatological urgency demanding immediate action. This research examines how the Antichrist figure functions within apocalyptic narratives in Sunni Islam, analyzing its role in constructing the theological architecture that enables revolutionary violence.