Britannian Empire is the force led by Emperor Charles Di Britannia. They are on a mission to conquer the world, remove individuality, and crush all those who refuse them.
| Concept Name | Britannian Empire |
| Japanese Name: | ブリタニア帝国 |
| Romaji Name: | buritania teikoku |
| Aliases | |
| 1st manga book: | |
| 1st anime episode: | Code Geass: Lelouch of the Rebellion #1 |
| 1st anime movie: |