Science fiction movie with a killer half human half robot.

Hi Friends! I would like to find a movie that my father told me. He can’t remember any details but some little. He was a child when he saw the movie so it must be released in the 70’s or 80’s. It is a science fiction movie. The plot was that a man was built in a robot and killed people. His name was maybe Trauner. My father was terrified of this movie as a child. I want to find it for him. It would be great if anyone could help me in the search. Thanks!