It's a bit difficult "to Google" when you're in China (where I am currently) and about psychopathy, sociopathy, schizophrenia, dementia, bipolar disorder and so on, I read a lot from my parents' and grandparents' books (they were psychiatrists). Later, in university, I learned some psychopathology too. Now I am a graduated philosopher-anthropologist.
For the ugly psychopaths isn't so easy to be attractive, nor for the ugly criminals. The Halo effect + the hybristophilia make the phenomenon known as "He is terrible but there are still women who like him?!"