According to the revelation on Twitter, the ongoing production of "Agatha: Chaos Witches" will usher in a powerful witch, and it is reported that actress Obrie Praza will play the villain in the show.

According to the character description that came out of the revelation, the witch played by O'Brie is: an evil character who is more powerful than Wanda, and even people who don't pay much attention to comics have heard of.
Through the information that broke the news, the foreign media locked the candidate in the legendary British witch Morgan. In the comics, Morgan's full name is Morgan Le Fay, first appeared in "Black Knight", is the legendary witch who overthrew Great Britain and one of the most powerful witches on earth.
Morgan has powerful magic, the ability to warp reality, time travel, and can also revive, mind manipulate, transform, teleport, emit energy, create illusions, and more.
And in the comics, Morgan also has a complicated relationship with Dr. Doom, once Morgan was Dr. Doom's magic teacher and lover, but after Dr. Doom found out that Morgan was just using himself, the two turned against each other and started a long magical struggle.
As for actor O'Brie Praza, he has starred in "I'm a comedy maniac", "My zombie girlfriend", "Noble Thief" and so on.
Agatha: The Witches of Chaos is a spin-off of WandaVision, starring Catherine Hahn, which will air next year.