@Kingdo
It's because of the influence of his parents.
His mother would always spoil him and always agree with him while degrading his sister. That from an early age would make him become spoiled and also think the world revolves around him automatically. If he did something wrong nobody would dare reprimand him and nobody actually did so yeah. As for his father? Hah! That made his personality worse! 1000 times worse! He also got his attitude from his father. His father is narcissistic 100%! His father is also rotten and a selfish mother freaking prick! He never admitted to his wrongs or that he did 1 single thing wrong and I could see that his son learned to be selfish and narcissistic from him as well.
From how he was raised to who took care of him, all these factors can prove that he became like that not because it was his nature but because of his parents.
That doesn't mean I'm on his side it just means that I understand how he became like the person he became, that's it.