The five children who find Wonka's golden tickets are Augustus Gloop, Veruca Salt, Violet Beauregarde, Mike Teevee, and Charlie Bucket. Along with being the main character, Charlie Bucket is significant in that his name is evenly balanced: his first name is two syllables, and his last name is two syllables. The names of the other children don't have this feature.
This balance of Charlie's name illustrates something of his character, although this is demonstrated more clearly in his contrast with the other children. All of the other children are selfish, but this selfishness is manifested in different ways. Augustus Gloop and Veruca Salt are simply greedy. Augustus is constantly eating, and Veruca is always demanding things (primarily from her father). Violet Beauregarde and Mike Teevee are more concerned with acquiring other people's attention. When she's interviewed after finding the golden ticket, Violet makes sure to mention the world record that she's won, and on more than one occasion, she pushes her father away from the camera's lens so that the attention is directed solely on her. Mike Teevee's selfishness doesn't really present itself until he's in the factory. After he sees how Wonka transmits a bar of chocolate through the television, however, nothing will stop him from "be[ing] the first person in the world to be sent by television!" He wants this claim to fame.
Charlie doesn't act selfishly, and occasionally, he even inquires about the welfare of the other children. He questions Wonka about Veruca and her father ("They won't really be burned in the furnace, will they?"), and at the end of the tour, he asks, "What's gonna happen to the other kids? Augustus? Veruca?" When Augustus falls into the river of chocolate, Charlie even tries to help him get out by extending a giant lollipop for him to grab.
At the end of the movie, Wonka calls Charlie "a very honest, loving child," and he clearly stands in stark contrast to the other children. While their behavior is the most obvious indication of this, their names point to this too. The syllables of Charlie Bucket's name are evenly balanced, but the names of the other children are imbalanced in the same way that their personalities are.
