What is the actual name of the character known as Cookie Monster?

The character known as Cookie Monster from "Sesame Street" is not officially referred to by a different name; rather, he is simply called Cookie Monster. While there may be informal references or fan interpretations of his character, the name "Cookie Monster" is well-established and recognized globally.

The choice indicating that his name is Sid may derive from misunderstandings, as there is no canonical evidence within the "Sesame Street" lore supporting that name for Cookie Monster. Cookie Monster's identity is heavily tied to his insatiable love for cookies and his distinct, blue, furry appearance, making his character memorable and unique without the need for another name. Thus, the other options do not correspond to any recognized names associated with Cookie Monster.