These villains are violently opposed to any limitations to their own personal freedom and often champion the downfall of society or morality as we know it.
Characters of this alignment tend to have no respect for rules, other people's lives, or anything but their own desires, which are typically selfish and cruel; they set a high value on personal freedom, but do not have any regard for the lives or freedom of other people. They do not work well in groups, as they resent being given orders, and usually behave themselves only out of fear of punishment.
It is not compulsory for a evil character to be constantly performing sadistic acts just for the sake of being evil or constantly disobeying orders just for the sake of causing chaos. They do, however, enjoy the suffering of others, and view honor and self-discipline as weaknesses.