He seems to have been as icy and mysterious as the characters he often played. So, your thoughts on Mark Lenard, please.
My impression at Dixie Trek in the '80s in Atlanta was that he was a gracious and informative guest who gave an interesting presentation. It's true that he wasn't ingratiating or fawning, but I'd say "dignified" rather than "icy." A classy man. He was polite and - I'd even venture - friendly at his autograph signing afterward: