A deluded person who believes they deserve to suffer eternal torment save for a sadomasochistic and non sensical sacrifice by a mythical figure. This mytical figure (Jesus of Nazareth) is largely plagiarised from other cultures. His believers believe his book foretells his comming, but when actually read in context (eg Isaiah 7:14, Micah 5:2) it has nothing at all to do with him. They worship him as a risen zombie and ocassionally indulge in ritual cannabalism - some christian sub cults actually believe they are eating human flesh.
They often lie and misrepresent scientific FACTS and many hear voices in their head. Many deny solid evidence and believe that a woman was made out of a rib and decieved by a talking snake. This caused "sin" although no evidence of moral laws exist out with humanity. The book they revere tells us that their god punished them and all mankind because of this act - even though they could not have known what they were doing was wrong. Much of the rest of the book is about killing babies (eg see the book of Joshua) and sending everyone to eternal torment
Noteable Christian examples include Fred Phelps, Jimmy Swaggart, Ted Haggard, Benito Mussolini, Pope Stephen VI, Tomas de Torquemada, Kent Hovind, Paul Jennings Hill, Robert Mugabwe, thr Yorkshire Ripper and antisemitist Martin Luther to name but a few of their finest