Sesame Street Monster is a popular children's show that has been running since 1969. It features a variety of characters, including Elmo and Zoe. Elmo is a furry red monster who loves to sing and dance. He is known for his catchphrase 'Elmo's World'. Zoe is a young monster who loves to explore and learn new things. She is often seen playing with her pet rock Rocco. Both Elmo and Zoe are beloved characters on Sesame Street and have become iconic figures in pop culture.