Who was the factory worker who abuses charlie in flowers for algernon?

In "Flowers for Algernon," the factory worker who abuses Charlie Gordon is named Joe Carp. He, along with another co-worker named Frank Reilly, often mocks and ridicules Charlie, taking advantage of his intellectual disabilities. Their cruelty highlights the theme of bullying and the struggles faced by those with mental challenges, particularly before Charlie undergoes his transformative surgery.