"Evil person" refers to someone who deliberately chooses to do wrong or harmful things, and lacks empathy, kindness, or consideration for others. Full definition
There's a lot of evil people in the world but there are also a lot of angels. (onegreenplanet.org)
However, I have met evil people in prison that would agree that their «hidden role was to make others seek and find freedom inside their own self». (nakedpastor.com)