Lenwood Heath only appeared in The Last Straw. He had long hair. He is a muscular 13 year old teenage bad boy and is usually Frank Heffley's "arch-enemy" until his parents send him to Spag Union military school. He reappears later in the book with short hair and a polite manner, working at a movie theater. He said that he's trying to get good grades at Spag Union so he can get into West Point. Greg's father then started chatting away with him as if they had never been enemies. At that point, Greg knew that Frank might send him to Spag Union too, and he was going to do it until he rethought the whole thing.