I suppose I've seen "From Hell It Came". But it's still not a patch on the infamous "Robot Monster", a world class cinematic atrocity. The producer couldn't afford a robot costume, so he rented a gorilla costume, and added a space helmet for Bela Lugosi's Ro-man from outer space. He uses a jacob's ladder to contact his mothership.
Now "They Saved Hitler's Brain" is from the 60s. But it's still pretty awful, with a very young Hitler head rolling its eyes back and forth. There's a plot, but not so's you'd notice.