Noting The Passing of Victor Lundin at 83. . . .

. he was the first on screen Klingon for Star Trek TOS. See The Hollywood Reporter link: Victor Lundin

It's funny,, I did not realize that was Victor Lundin, but I do remember him starring along with Paul Mantee in "Robinson Crusoe on Mars" (1964) I actually saw that movie on the Big screen. :-)