Narf is one of the quartet of fun-loving monsters on Sesame Street's Monster Clubhouse segments. Like Cookie Monster, he has googly eyes and speaks in broken English. Outside of the Clubhouse, Narf taught Pino to play with other monsters by singing "Don't Be a Bully".
Narf has continued to appear in later seasons as a background monster (albeit with a different design), such as in episode 4522 where he is one of the movie theater patrons. He also appeared in an insert for season 45 as one of three monsters who help Grover demonstrate tall, taller and tallest.
- On 5, Rue Sésame, Narf is one of the main characters and is called Yoyo. He is potrayed as a very worried monster who makes friends easily. The puppet is also used in The Furchester Hotel as one of the Tea Time Monsters and in Sesame Amigos.