A nonconformist; an unusual or unconventional person, who may be rejected or disdained by others for this reason.
Used other than figuratively or idiomatically: see black, sheep.
A person who is not wholesome, honest, or trustworthy.
A worker who refuses to strike; a scab.
A person having the qualities of an android; one with few or no emotions or little personality, or who acts in an unthinking manner; a robot.
A robot, especially one made with some physical resemblance to a human (an android).