Nelson Muntz
The Simpsons character
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Nelson Mandela Muntz is a fictional character and the lead school bully from the animated television series The Simpsons, where he is best known for his signature mocking laugh "Ha-ha!". He is voiced by Nancy Cartwright. Wikipedia
Parents: Mrs. Muntz and Eddie Muntz
Date of birth: October 30, 1977
Played by: Nancy Cartwright
Dad: Eddie Muntz
First appearance: "Bart the General"; February 4, 1990