Hey,
So a subject that has been talked about a great deal in youtube videos and some psychological literature, is something called 'narcissists'. Closely related to but not the same as the medical condition 'narcissistic personality disorder'.
It is in fact really a term used to describe features of psychological abuse and is less so about what might be termed 'self centered' behaviour, at least in my understanding. There are many features to this behaviour pattern but some of them are things such as: Gaslighting, scapegoating, triangulation, hypersensitivity. There are different 'types' of narcissism such as grandiose, covert, malignant (i.e. sociopathic), communal and benign. Benign is the least dangerous and is kind of like some small tendencies towards some of the features, such as grandiosity and insensitivity. But none of the more creepy aspects of the disorder, like gaslighting.
The area is not that easy to grip in my opinion. Because it is an explanation of a pattern of behaviour it is a term pretty much anyone can use which makes it not really a medical term but more of a term similar to that of 'asshole'. There are different schools of thought on it in that some people think it is very common as a literal pattern of behaviour and some think it is overused in order for people to demonise the partner when they have been the unreasonable ones. Also the subject and statistics are not clear since the profile is of someone that is very full of themselves and is very insistent they are innocent of all wrongdoing despite actually behaviour very badly. So almost none of them would actually accept the diagnosis of 'narcissistic personality disorder'.
But in my belief there is an almost demonic sense connected to what would actually be termed narcissism. Like it's something that if you have experienced it you get it and if you haven't you don't really and it can't be put into words.
Anyone else interested in this term, or have anything to say on it?
People who consider all others to be objects for their use and amusement.
People who recognize no higher power above themselves, and no consequences for their behaviour.
People incapable of love, empathy, compassion, loyalty, altruism.
People capable of cruelty and brutality, oblivious to suffering.
Sounds pretty demonic to me.
I think some people are possessed. 
I think w/ Venus Rx it's something to think about, relationship interactions of all sorts are coming to the fore now.
Probably anyone drawn to astrology has at least a passing knowledge or has had some experience with narcissistic behavior. Narcissist has really become a buzz word the last decade or so and I think a lot of people throw it around in reference to certain behaviors that aren't necessarily a symptom of the actual disorder. It's definitely become more of a theme in our increasingly self-focused society.
Point three would be a sociopath. or malignant narcissist. In my understanding the narcissist per sey is a little different and in some ways more complex.