Clea

Clea is a friend and ally to Doctor Strange.

Clea joined Strange at a ski resort in Germany. He wore warm clothing while she went more casual.

The two were there at the same time as the X-Men members Logan, Remy LeBeau, and Rogue.

Background
Clea was unnamed and unvoiced.

Currently the only version seen in animation. So far, none have been heard.

In the Comics
Dormammu is her uncle.

Is the Sorceress Supreme of the Dark Dimension. Her powers include transformation, magic blasts, teleporting, telekinesis, levitation, mesmerism, thought-casting, mind control, illusions, and the tapping of extra-dimensional energy by invoking entities or objects of power existing in dimensions tangential to Earth's through the recitation of spells.

Clea warned Strange against facing Dormammu. Dormammu punished her but Strange forced him to release her. She became his only ally in the Dark Dimension.

The Ancient One sent her to save her mother. Afterwards, Strange took her back to Earth.

Eventually Clea took the throne over the Dark Dimension then married Strange. Dormammu returned and captured her to lure Strange. Strange freed her and she returned to Earth after her mother and her lover Baron Mordo took the throne.

Began leading a resistance against Dormammu.