was once a humanoid sorcerer from the Faltine dimension. He and his
sister, Umar, were exiled from Faltine and took refuge in the Dark
Dimension. Eventually, Dormammu was able to conquer the Dark Dimension
and trade his humanoid body for one composed of mystic energy.
telling the Ancient One that he wants to take over the Earth dimension
Dr. Strange went to the Dark Dimension to stop him. Strange was much more
powerful than he had anticipated and defeated all of his minions. Even Dormammu
had used up so much of his energy in battle that the barrier holding the
Mindless Ones was weakened. Dormmamu then fled to restore this barrier. Strange
offered his power to help not wanting the Dark Dimension to be destroyed.
Dormammu felt honor bound to Dr. Stange and agreed to not interfere with the
eventually decided that he could still have Dr. Strange killed without
interfering in, the Earth Dimension by greatly empowering Baron Mordo.
Mordo sought to use this power to kill Strange, and captured the Ancient One and
lured Strange into the Dark Dimension. Mordo and Strange battled with
hand to hand combat until Mordo struck Strange with a mystic bolt from behind.
This violated Dormammu's sense of honor and he banished Mordo to another
Dimension. He then battled Strange himself and after losing agreed that he would
not again use a third party to infiltrate the Earth Dimension.