The picture of Jesus you see is made up.
He doesn't even look close to that.
He looks like a Middle Eastern man.
But the Christians don't want their people to worship a Middle Eastern looking man so they made him look Caucasian or something ..
And Jesus is only an "alien" if you assume he's "god" or "son of god"
He's neither, therefore he's just a man.
Middle Eastern Jesus for the win ..