Sorry. Too much independent documentation from corroborating sources. .5 Roman emperors, 2 Roman historians, 1 senate scribe 1 Hebrew general, 1 Hebrew historian/witness to surrounding events and 4 Hebrew lay eyewitnesses all wrote about him contemporaneously, beginning within 7 years of the execution.
Whatever else you may think, he was an existing and historical and well documented person. In fact he had more documentation than cleopatra, Hatshepsut and Boudicca combined.