| Name | Character | Episodes |
|---|---|---|
| James Faulkner | Kardinal Emad Rhades | 2 |
| Nikolaus Paryla | Diener des Papstes | 2 |
| Rolf Kanies | Andreas Imhof | 2 |
| Cosma Shiva Hagen | Johanna Bachmann | 2 |
| Joachim Fuchsberger | Papst Innozenz V. | 2 |
| Olivier Sitruk | Simon Maler | 2 |
| Rudy Ruggiero | Alessandro Borghese | 2 |
| Numan Acar | Victor | 2 |