They were large and well set in his head and, now that he was definitely relaxing, filled more often with a droll sense of humor.

Easy going working-class guy, droll sense of humor, not easily angered.

A partial answer is that he is a man with a droll sense of humor.

He had a droll sense of humor... not unlike his own.

Nonetheless he was popular with his team mates and was said to have a droll sense of humour.

He must have confidence and a droll sense of humour.

You have a droll sense of humour, milord, but it brings out the truth at times.

He has a loose, Midwestern style, a droll sense of humor and a pleasant speaking voice.

That distance comes across as droll common sense.

"He had a droll sense of humor and loved early space adventure stories."