Mordo (Doctor Strange: The Sorcerer Supreme)

Mordo is a master of the dark mystical arts, ally to, and archenemy of.

Biography
Mordo, under 's orders, led other sorcerers against creatures sent by Doemammu, but grew resentful of newcomer and joined Dormammu. After Mordo failed in defeating Strange, Dormammu killed him.

Background
Baron Mordo was voiced by Kevin Michael Richardson.

In the Comics
His name was Karl Mordo and had the title of baron. It is unknown if the animated character lacks it or simply doesn't mention it.