Cookie Monster is the blue Muppet on the Sesame Street. In a song in 2007, and later in an interview in 2017, Cookie Monster revealed that his real name is Sidney Monster.
He is best known for his voracious appetite and his famous eating catchphrases, such as "Me want cookie!"
Although he eats almost anything, including normally inedible objects, his preferred food is cookies. Chocolate chip cookies are his favorite kind.