Agatha Harknes is an ancient and formidable sorceress, possessing a mystical legacy that spans centuries. She existed during pivotal moments in history, including the Salem Witch Trials where she formed her own coven, seeking to practice magic freely in the New World. She called it New Salem, a colony of witches of whom she had been the leader. She later changed the name to the Coven of Chaos, and it stays that way to this day. However, all of her coven-mates seemed to die after trying to attempt something called the Witch’s Road. When she was a child, she was accused of learning black magic by her mother’s coven and was blasted with their magic. However, she unlocked the ability to steal people’s magic and life force, killing them all in turn. She then got pregnant and had a child named Nicolas Scratch, almost dying in childbirth. She was visited by Death then, and the two fell in love and using magic, Death got her pregnant. However, they couldn’t touch. In the end, 8 years later, Death took her son, and she became vindictive and blood-hungry. Out of a song that she’d taught her son, she lured witches into the woods and stole their magic to gain power.

At the end of the 18th century during the American Revolutionary War, Harkness joined the Daughters of Liberty, a group of women fighting for justice in the new world. She used her centuries of knowledge to train them in the mystical arts. Then, she was the governess of Franklin Richards. She easily fended off the Frightful Four when they came to abduct Richards, and admitted to the Fantastic Four that she is a witch. She then aided the Fantastic Four in battle against Annihilus. Through the actions of her son Nicholas Scratch, she was revealed as a member of the previously unknown. Scratch had taken control of the town and persuaded its inhabitants that Agatha betrayed the community's secrets by working for the Fantastic Four. She has died twice in her life.

For a while she was trapped in a sitcom-based simulation by Wanda Maximov, who in the end took her magic away from her mid battle. Then, Wanda put her into another simulation for 3 years, making her seem delusional and insane. A woman named Rio- death in disguise- and a boy with no name- who she calls Teen- brought her out of the simulation. The only solution was to go down the Witches' Road and steal people’s powers again. So she got another coven. The women were Lilia, Jen, Alice, Sharron, and the Teen. Tomorrow, she plans on killing the witches and getting some power back, but Teen (secretly Wanda’s child reincarnated) will create the road and actually make them go down it.