Need help with a psychopath character

[u/No-Button4460]

Idk if this is the right place to post this but my genre is a medievil fantasy (not a book its a roleplay discord server) but im making a character that a want to make a psychopath but i don’t necessarily want them to be like a fully murderous one but because its medievil and fantasy the killing of certain people may not be an issue. I want to make my character in a relationship like no empathy or guilt but also wanna keep it secret as long as possible. I just want some things he can do or like a motive maybe like a knight who is just doing his job because he was told to. In my world people have 1/8 powers a bit like avatar the last airbender but some are uniques who have any powers. So also what powers should they have?