During a year, they would meet and film each other. The filmmaker and the actor, the President and his prime minister, Alain Cavalier and Vincent Lindon. In Pater, you will see them in real life and in the fiction that they invented together.
| Actor | Role |
|---|---|
 Alain CavalierAlain Cavalier | Alain Cavalier |
 Vincent LindonVincent Lindon | Vincent Lindon |
| BBernard BureauBernard Bureau | Bernard Bureau |
| JJonathan DuongNot listed | Not listed |
| HHubert-Ange FumeyNot listed | Not listed |
| JJean-Pierre LindonNot listed | Not listed |
| MManuel MartyNot listed | Not listed |
| CClaude UzanNot listed | Not listed |
| AAlexandre WidhoffNot listed | Not listed |
| JJean WidhoffNot listed | Not listed |
| RRégis d'AudevilleNot listed | Not listed |
| JJosette BaronNot listed | Not listed |
| TThibault de ChâteauvieuxNot listed | Not listed |
| JJérémy FlamentNot listed | Not listed |
| OOlivier MalletNot listed | Not listed |
| DDominique SolliecNot listed | Not listed |
| NNicolas WeckerNot listed | Not listed |
| GGrégory WidhoffNot listed | Not listed |