After a long reign, Idriss I was assassinated by his political enemies. This event left his eldest son, Raphael, to be the de-facto Co-Regent of the Imperium.
- Dune: House Corrino (Mentioned only)
| Preceded by|
Unknown, eventually Ishaq Corrino XV
| Padishah Emperor of the Known Universe|
| Succeeded by|
Raphael Corrino I (as de-facto Co-Regent)