Which makes it all the more strange that one of the show’s most well-known characters was absolutely nowhere to be found in The Simpsons Movie: Bart’s mortal enemy Dr. Demento Sideshow Bob.

But there’s another Grammer character who’s been around for nearly as long: Sideshow Bob, who debuted in 1990 during the first season of The Simpsons. “You are the king of long runs,” said ...