I think Napoleon would be a round character but I'm not sure.

Animal Form is a great, popular and nice, book by George Orwell. The dynamic characters in this novel are, in my thoughts, Snowball, Napoleon, and the humans. Snowball changed in the story when he was chased away. As per Napoleon he changed even more. He supposedly changed so much that he began sabotaging the windmill and even destroying it. He also was blamed to milk the cows in their sleep and take the chickens eggs. Napoleon changed in a big way at the end of the story, he became a human. I believe that the humans are also dynamic characters because they too had a big change. Actually, at the end they became pigs. Pigs to humans, humans to pigs. This is how the story ended.

The static characters in the story are Squealer and Boxer. Throughout the whole book, no matter what, Squealer would always back Napoleon up or lie about him. When Napoleon became drunk and had a hangover Squealer said he was very ill and the animals should not worry that he was drinking alcohol.