Marty Robbins
I think it's sad, and ironic in a way, that Marty Robbins' character ended up taking over for Clint Eastwood's character in the recording studio as Red was close to death, and Marty ended up passing away in real life before the film was released. He didn't look too well in the movie (I'm only saying that in hindsight; had he not died so soon after it was filmed I probably wouldn't have thought he looked any different)