Answer the following Q with stream of consciousness. Erik Per Sullivan (born July 12, 1991) is an American actor. He is best known for his role as Dewey, the younger brother to middle child Malcolm, on the Fox series Malcolm in the Middle, which was on air for seven years.\n\nAnswer this question based on the passage: who played dewey in malcolm in the middle?
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The relevant information is: He is best known for his role as Dewey, the younger brother to middle child Malcolm, on the Fox series Malcolm in the Middle, which was on air for seven years. Therefore, the final answer is Erik Per Sullivan.
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