Satanist n. : A very wicked person.

Example:
How do Satanist view a Christian in general?

Taxonomy
Satanism, Satan, Satanists, the Church of Satan, beliefs, Theistic Satanism, Satanic, Lucifer, LaVeyan Satanism, Temple of Set, the Catholic Church, The Satanic Bible, Modern Satanism, enemy, god, the Devil, free encyclopedia, Atheistic.

Defination from the web:
Satanist groups (those which appeared after the 1960s) are widely diverse, but two major trends which can be seen are Theistic Satanism and Atheistic Satanism. ... Some French movements widely described as being Satanist by French writers of the time (Late 1800s to early 1900s) ...