Nelson Muntz and Bart Simpson are two of the most iconic characters from the animated sitcom The Simpsons. They are also two of the show's most well-known rivals. Nelson is a bully who frequently picks on Bart, but Bart is always up for a fight. Nelson is a large and imposing boy with a distinctive laugh. He is often seen wearing a pink shirt and a purple vest. Nelson is a member of a group of bullies known as the Nelson Gang. The Nelson Gang is made up of Nelson, Jimbo Jones, Dolph Starbeam, and Kearney Zzyzwicz. A fanart The Simpsons Nelson Bullies Bart Sticker.