Anyone know what this old movie was called?

The main character was a girl and all I could remember was that she met a robot soldier that held a pail and turned him on using a key and became her companion and later on in the movie she walked into a place where the evil gorgeous woman was. The woman happened to own the heads of other gorgeous women in glass cases. Then my memory skips to a part where the girl was then locked into a room by the evil women.