I know of one and met her briefly. She manipulated a young man for her own ends and brought disaster to his finances, career, and health, she tried to cut him off from his family and almost succeeded. She abandoned him when he was hospitalised, but when he showed signs of recovery, she started manipulating his guilt about wanting to escape the relationship to try to extract from him money that he no longer had but she thought could be wrung from his family. Their help in strengthening his resistance triggered her to try to manipulate them too, by obliquely threatening to destroy other careers, but they joined together to thwart her.
She didn't even have beauty or charm, but she knew which buttons to press to get what she wanted, and she'd no conscience about how she did it.