Latest Appearance:
Dr. Strange (vol. 2) #3-4, The Flight Of Bones

Profile:
The Dread One!  Former ruler of the Dark Dimension, and eternal foe to Dr. Strange.  His power derives from the worship of him by beings of the Dark Dimension and other stygian followers.  His fiery visage comes from the mystical Flames of Regency, which materialize  about the head of the ruler of the Dark Dimension.  Dormammu is a being of pure mystical maniacal energy, and seemingly cannot be destroyed.  He has always been opposed by the Sorcerer Supreme of the Earth dimension, first by the Ancient One and many times by Dr. Strange.  Dormammu's evil presence is a continual threat, and he is determined to invade the Earth realm and vanquish Dr. Strange.

Relatives:
His sister is Umar, and his niece is Clea.