IPD:Judas
Judas
(John 6:70-71 [KJV])
[70] Jesus answered them, Have not I chosen you twelve, and one of you is a devil?
[71] He spake of Judas Iscariot the son of Simon: for he it was that should betray him, being one of the twelve.
Notice above that Jesus doesn't say that Judas was possessed by a devil but that he was a devil, so it seems he wasn't a human being at all. Possibly he was a fallen angel.