Looking good and being charming is certainly also a trait of psychopaths.

Right. Disney has been reinforcing those stereotypes for decades, essentially brainwashing us. But most other forms of entertainment are more realistic, villains are charming and attractive like the real world. I think when people are naturally gifted with looks, they face a huge temptation to take the easy way out because success comes so easily to them. That reminds me of my time working at a beauty salon; it was an all-female environment, and I noticed that the most conventionally pretty staff were often lazy and uncooperative, while the 'average' ones were the hardworking ones who were actually easy to work with.