Agatha Harkness is a centuries-old witch who has played a significant role in the Marvel Universe, particularly in the lives of the Scarlet Witch and Vision. Initially introduced as a seemingly benign nanny, her true nature as a powerful sorceress was revealed over time. She has been involved in various story arcs related to magic and the supernatural, often serving as both a mentor and a manipulator.
A powerful witch and mentor to several superheroes, known for her deep knowledge of magic and the occult.