He was pretty unique. They all are, but I think Richard's characters on SS were the most "out there". None of them are necessarily what you'd call spotlight characters the way Big Bird, Bert, Grover and others were, but they added something wonderful to the mix to make it that much more complete. All of his characters were very flamboyant and oddball, for lack of better words. They weren't huge stars, but Gladys, Forgetful, Placido, Don Music...they were the oddball, exentrics that often added the weirdness and nonsense. Does that make any sense. Like if anyone on Sesame Street needed to check into a psychiatric ward, it would have most likely been one of his characters. If Big Bird, Oscar and Ernie were the steak dinner, Richard's characters would be the yummy plate of cake on the side.