Sociopath

This character has an Antisocial personality disorder (ASPD), which is characterized by a limited capacity for empathy as well as a difficulty sustaining long-term relationships.

A sociopath has little regard for another person's emotions, rights, or experiences. They lack remorse for their actions, and they act in ways that show no regard for others, including lying, cheating, and manipulating.

The character may display arrogance, think lowly and negatively of others, and have limited remorse for their harmful actions and have a callous attitude towards those they have harmed.