Agatha Harkness

Agatha Harkness is a fictional character that appears in American comic books published by Marvel Comics. She is a powerful witch, portrayed as a sinister heroine and teacher of Wanda Maximoff, as well as being the mother of Nicholas Scratch. Agatha has been depicted as one of the original witches from the Salem witch trials. She survived and later became a significant figure in Marvel continuity, protecting Franklin Richards as his nanny and later mentoring Wanda Maximoff (the Scarlet Witch) in real magic. Agatha also had a familiar named Ebony, a cat-like creature that could sense the presence of mystical beings.