Casey Miller is a third grade student at the South Park Elementary, who first appeared in the episode "Dances with Smurfs" as one of the candidates to become the new morning announcer. He has a voice which his friends apparently call, "butter to their ears", and "audible chocolate".

After Cartman, unknown to him, plays a trick in order to get Casey out of the competition (Stating that he called Mr. Mackey's hair piece a "Moronic Jizzrag") he is seen reading Cartman's new book and agreeing with its points. At the end of the episode he is revealed to be the new morning announcer and scathingly criticizes the way Cartman 'runs' the school.

Casey is a parody of radio personality Casey Kasem.

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