Dormammu


 * "He is the Cosmic Conqueror, the Destroyer of Worlds. A being of infinite power and endless hunger, on a quest to invade every universe and bring all worlds into his Dark Dimension. And he hungers for Earth most of all."
 * ―Wong

Dormammu is a primordial, inter-dimensional entity who wields apocalyptic levels of supernatural power and is the ruler of the Dark Dimension. Dormammu convinced Kaecilius to use his power to destroy the Masters of the Mystic Arts and bring the Dark Dimension to Earth. Before Dormammu could complete his plans, he was confronted by Doctor Strange, who used the Eye of Agamotto to trap Dormammu in an endless time loop until he agreed to leave Earth and take Kaecilius with him.