Since the Islamic State proclaimed the Caliphate in 2014, the terrorist organization has been prominent due to the high-quality and efficient distribution of its propaganda, especially in the main online social media platforms. Two of their most popular vehicles for indoctrination and recruitment, the e-magazines Dabiq and Rumiyah, perfectly embody the philosophy of an organization constructed upon a multi-semiotic polarized discourse in which the antagonism between enemies and heroes is stated in many different ways. Using multimodal critical discourse analysis and visual framing as our main theoretical frameworks, this chapter analyses the semiotic structure of the images of foes and allies in the aforementioned magazines to show their essential role within the propaganda machine of the Islamic State, designed to achieve two main interconnected goals: the legitimation of their actions and, through this, the adherence of new fighters to their cause.