Dormammu

Dormammu is an immensely powerful entity who rules the Dark Dimension, a realm that exists outside the normal flow of time, and has sought for ages to consume other universes and merge them into his own domain. Doctor Strange bound him into an inescapable time loop using the Eye of Agamotto, forcing him to agree to withdraw from Earth and call off his followers to end the cycle. Read more →

First turns up in Doctor Strange.