```mermaid
graph TD
    A[Napoleon] -->|Rival| B[Snowball]
    A -->|Supporter| C[Squealer]
    A -->|Supporter| D[Boxer]
    A -->|Oppressor| E[The Other Animals]
    B -->|Idea| F[Windmill]
    C -->|Propaganda| E
    D -->|Loyal| A
    A -->|Enemy| G[Mr. Jones]
    G -->|Former Owner| H[Manor Farm]
    E -->|Rebel| G
```