What is a serial killer personality?

this article will clear based on my personal perspective what it states on the headline above.besides  i will move all judgmental laws and rules and opinions to the side till I finish my article. So the serial killer personality I am referring to in this article just circulate the genius hidden well planned killer not the one who were told what to do and lack intelligence. These type of serial killers look at the world as a frame who can be replaced upon demand but only under their control.they capture all law rules in an empty cylinder then toss it away.they see people as extras not as people and their own rule is to adjust their number on the ground. They feel no emotional pain for others or people close to them.their emotions are inside one role which is satisfying self only.they love to act with empathy to frame the shallow head who need their attention. they feel like why care for unknown people? The best thing about serial killers that some of them are passing iq test to the genius level and some of them would benefit the society if they repent and law enforcement use them as detectives. Speaking of that serial killers could be framed or guilty or set up that would not change their title but might change the sentence. They look at people as a target since they have control over them .they hate talking in general since every one has to watch what they say.they carry responsibility and consciousness based on what will they do next.mental illness is not an execuse since if you are mentally ill you will not be capable of plans .a lot of resources refer to their description as psychopath. However , the real psychopath will be within the title as psycho and in it's path.but I disagree to that serial killers are not psychopath. But a psychopath could become a killer. Now is the big question? How to spot a serial killer from personality traits? Look for these traits calm people in angry situation, calm people in a panic situation, smiley people in a horrific accident, rolling eyes people in disagreement, people who fake their voice tone and act empathetic while their eyes are cold,people who repeat same sentences of morals and ethics while their eyes are rolling, people who can be your friend and act your best friend infront of others, people who brace their holy life and tell people how much donations and good work they do,people who never respond unless they get something to themselves, people who act social open book butterfly to any one and they can have any one in their home,people who run around every one to spread a bad news in empathetic way about a stranger to them,people who doesn't say a word in a happy moments.