Ayesha

Played by Elizabeth Debicki

Ayesha is the High Priestess of the Sovereign, a golden-skinned, genetically engineered species that considers itself perfect and views other life as inferior. After the Guardians of the Galaxy stole from the Sovereign and humiliated her people, she sent an armada and later created the artificial being Adam Warlock to hunt them down in retaliation.

First turns up in Guardians of the Galaxy Vol. 2.