The middle of the quartet, William Dalton and John "Jack" Dalton are the middle brothers. They have somewhat colorless personalities and mostly act as buffers between Joe and Averell, calming down the former and shutting up the latter. They often repeat the same sentence: "Calm down, Joe" and "Joe, calm down". In their first appearance, Jack was a trigger-happy arms maniac and William a master of disguise, but those characteristics were not kept in subsequent albums. When Morris created the brothers, William was usually the shortest of the two, but in some stories, as well as animated series, William becomes the tallest of the two. Yet their personalities stay the same.