Is Agent Moulder really an Alien??

I do not think he is an alien, but one never knows. I really hated it when they canceled the show, but when they wrote that his and Scully's son would be given to another family because they were afraid of evil space aliens or government officials in cahoots with the space aliens harming the boy, I guess they had no choice. The angry letters and boycotts in the future by people who would have kept their child instead of sending him away would have driven the show off the air anyway.

I have always wondered why they didn't follow up on the one story at the beginning of season 7, when mulder could read people's minds, also, how can he be completely unchanged after the dying and coming back to life?

Mulder isn't an alien, just an emotionally driven FBI agent trying to get peace about what happened to his sister, and get to the truth about government secrets, who is perpetuating them and what they will eventually lead up to. There is a good review of the final episode online at: http:www.tv.com/the-x-files/the-truth-1/episode/129615/recap.htm