I was a young kid watching an inappropriate alien movie sometime in the early 90’s. The only thing I remember is that there is a black guy on a bulldozer like thing underground. He was a good guy helping the protagonist and then all of a sudden reveals himself to be an alien. I think he turned orange with tentacles. It may not have been a very scary movie, but it frightened me and I still have nightmares about it. Being able to re-watch it as an adult may help me get over it.