One of the most memorable scenes is where one of the characters is killed by a hovering spherical robot about 1-2 ft in diameter (looks a little bit like the pokémon fortress). The robot sticks out a little propeller blade about 4 inches wide and saws through the guy’s clipboard (which for some reason he chooses to protect himself with) and into his abdomen. The guy who is in charge of the robot says something like "Why did you do that? He was a good man" to the robot, which I think must've had a mind of its own as it didn't seem to care.
Another thing I remember in the film is these people sitting at control panels and they wear long dark brown robes, and wear large reflective helmets so you can't see their faces.
I'm sorry there isn't a lot of detail here, but I remember seeing this movie when I was really young and it terrified me. I'd love to know what it is, so any suggestions would be much appreciated. Thanks!