What are signs of sociopath?

Lacks empathy: Sociopaths lack genuine empathy towards others, use and manipulate others for the gain of the sociopath

Antisocial: The modern clinical term for sociopathy is antisocial personality disorder. The hallmark of this disorder is the person seems to have no conscience, or sense of morality, or right or wrong. This person cannot empathize with others, is opportunistic, predatory, and often thrill seeking. An example of this would be Charles Manson.