Demoniac

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Demoniac: possessed, produced, or influenced by a demon: demoniac creatures; resembling, or suggestive of a devil; fiendish: demoniac energy; a demoniacal fit. One who is or seems to be possessed by a demon. Middle English demoniak, from Late Latin daemoniacus, from Greek daimoniakos, from daimonios, of a spirit, from daimon. The "before" and "after" descriptions of the demoniac reveal that he is a totally different person under demonic influence. It is rather like the behaviour and personality change in a man who is totally intoxicated. More than this, however, is the fact that the demoniac's own identity and individuality are swallowed up by the demons oppressing him. When Jesus asked the demoniac's name the man replied: “Legion, for we are many.” (Mark 5: 9).