 Susan's parents were seen in episode 2125 (season 17), in which they visited Gordon and Susan after they adopted Miles.They revisited the Street in episode 2226 (season 18), Gordon and Susan threw a party to celebrate the one-year anniversary of Miles' adoption, in which the event was reenacted with Big Bird as Gordon, Snuffy as Susan, and Elmo as the adoption agent.Susan's father is Lee (played by Bill Cobbs), and her mother is Dorothy (Frances Foster).