Mostly fiction. Images of Jesus are often artistic interpretations or based on religious beliefs rather than concrete historical facts.
It's a mix. Some aspects of the common images of Jesus might have roots in historical and cultural influences, but a lot is also based on imagination and religious tradition. There's no clear-cut evidence to prove their absolute factual basis.
It's hard to say for sure. Images of Jesus can be a blend of both fact and fiction. Different cultures and artists have depicted him in various ways, and much of it depends on religious and symbolic interpretations rather than verified facts.