T.J. had that Chuck Connors look after he fired off his rifle in the opening credits of The Rifleman. If you doubt that, just look at the eyes of T.J. and Connors, if you can remember back that far.
As for TJ himself he was at home in the water. He loved swimming either in Big Bass Lake or Lake Michigan. And, I never foun out what his initials meant. Even his best friends did not seem to know. His parents must have provided him a most unusual first name.
But what made TJ stand out most was that Chuck Connors look. Don’t you think?