Sergeant Kooperman
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Sergent Kooperman is a character in The Super Mario Bros. Super Show!. He appears in Plummer's Academy / Glasnuts and licvesa in Brooklyn, New York. He is an instructor at Plumber's Academy.
He is a very strict man, and doesn't even care if one of the people in the academy die. He is voiced by the same person who voices King Koopa making his voice sound like his. Thought possibly done purposly, his last name sounds like Koopa.