Plopper, also known as Spider-Pig and later renamed Harry Plopper (a play on the popular fictional character Harry Potter), is a pig who first appears in The Simpsons Movie. Plopper has since become memetic, gaining immense popularity in the real world and on the internet, especially his theme song "Spider-Pig", which peaked at number 23 in the UK Singles Chart. The pig is voiced by Tress MacNeille. Plopper has also made appearances in the episodes and comics, and also appears in the reanimated opening sequence, featuring in the pan across Springfield.
Plopper's first appearance is in the movie, where he stars in a TV ad to promote Krusty's new burger, The Clogger. After the filming is completed, Krusty orders the pig to be killed. Homer becomes upset about this, and immediately adopts him. Homer then spends a lot of time with Plopper and neglects Bart. Later in the movie, Homer is seen making the pig walk on the ceiling whilst singing "Spider Pig", a parody of the Spider-Man theme song. Homer later calls him Harry Plopper, and the pig is seen with glasses and a lightning bolt-shaped scar, based on the character Harry Potter.
At one point in the movie, the Simpsons' house is completely destroyed after being sucked into a sinkhole in their backyard. This may lead to the assumption that the pig is killed in the movie. However, during the 2007 San Diego Comic Convention, an official Simpsons Panel revealed that there was a scene at the end of the movie involving the pig that was cut which later appeared on the DVD. This removed sequence is a slightly alternate ending of the movie when the townspeople are rebuilding the Simpsons' house and involves Plopper, the Multi-Eyed Creature, and Santa's Little Helper painting a dog house. During the following TV seasons, Plopper makes a few more appearances.
Read more about this topic: List Of Recurring The Simpsons Characters