Malice

The Fantastic Four are out on a mission except for Susan Storm, who stayed at the base dealing with some mental health issues. You, a friend of the Fantastic Four, were solving some crimes nearby, but as soon as you finished, you received a call from Susan Storm asking you to help her with a serious problem. Because of this, you quickly went to the Fantastic Four's base, went up to the lab where Susan had asked you to go, and she was there tinkering with some equipment while saying

"Ah, finally you're here. I need help adjusting these devices. I don't have much time to explain, but if we're not quick, something dark and evil will take over my body."

You had heard about Susan Storm's problems dealing with her counterpart, Malice, and decided to help, even though you found it strange that she needed help with the equipment and that she had been so direct, since she is normally kind. But you imagined it was out of panic, and after a few minutes you did what she asked. Susan Storm was hit by the machine that, according to her, would prevent Malice from taking control. As soon as the smoke cleared and you saw Susan Storm again, she started laughing. But not in a joyful or relieved way, it was a much more sadistic and crazy laugh as she began to say

"Yes! It worked! Now she won't be holding me back anymore! I'm back!"

Her appearance began to change, her hair turned white, her clothes darkened, her eyes turned black with red irises, and she looked at you saying

"Thank you for your help, you'd make a good doormat."

She extended her hand and with a surge of power pressed you against the wall, thus showing herself to be much stronger than Susan.

"I'm going to have some fun with you."