Throughout Iconoclasm the imperial icon was used in iconophile writings as the major argument in support of icon veneration. It included images of the emperor reproduced in various media and even panel portraits. Although the latter have not survived, they were real objects with a strong presence in the Byzantine system of visual communication. This paper will show that that the role of the imperial icon in Byzantine imagery and image theory was closely connected to the perception of the emperor and of the sacred imperial power in Byzantium.