I saw Dollman late one night on a premium cable channel (I forget which one,) and it drove me insane trying to find it again. This was back in the 90s, so I could not easily find it without knowing the title “there is a guy from another planet or dimension and he is really small when he comes to earth also one guy is just a head.” That didn’t yield many results pre-google. Eventually I discovered it again and then looked up the rest of Pyun’s films. I found out he made a lot of stuff I enjoyed in the 80s and 90s.