MHO, all four Rs possessed varying degrees of NPD.
Not all psychopaths are killers.
Psychopaths make excellent CEOs b/c they're in charge as the Boss. Hence, others are beneath them. They are usually of high intelligence and take in information readily. They take high risks but usually land on their feet quickly. They tend to be loners, manipulators, persuasive, controllers, and charming.
Sociopaths are socially adept which BR is not. BR is not a psychopath either, JMHO.
BR has functioning Asperger's.
There is no cure. Can be treated or controlled with medication.
Abilify as a mood stabilizer is a possible medication that BRs psychiatrist prescribed.
Many Asper's are violent or experience seasons of violence.
BR knows right from wrong. He is highly intelligent.
Possessing co-morbids could influence his behavior.
Asper's should not view TV or be exposed to violence on radio or TV (or Nintendo64). It makes them excitable. They need to draw, read and color and maintain a quiet atmosphere. I don't envision the Rs household as being quiet, esp. that month in December.
Sadly, this was Burke at Christmas 1996:
"Kids (and adults) with Aspergers and High-Functioning Autism are prone to frustration, anger and sometimes violence. The rapidity and intensity of anger, often in response to a relatively trivial event, can be extreme. When feeling angry, the child with Aspergers does not appear to be able to pause and think of alternative strategies to resolve the situation. There is often an instantaneous physical response without careful thought. When the anger is intense, the youngster with Aspergers may be in a blind rage and unable to see the signals indicating that it would be appropriate to stop."
http://www.myaspergerschild.com/2010/06/anger-and-violence-in-aspergers.html?m=1
Disclaimer: I am not a Doctor of Medicine. This is my opinion only. Do not share this information anywhere without permission which will not be granted.