| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Coichi The Serene Warrior | Predators | 37 |
| Mr. Guv The Serene | 48 | |
| Mr. Serene | 38 | |
| Mr. Serene | Serenity | 38 |
| Mr. Serene | Revelation | 39 |
| Mr. Serene | Serenity | 39 |
| Mr. Serene | Revelation | 40 |
| Sir Serene | Revelation | 41 |
| Sir Serene | Revelation | 42 |
| Sir Serene | Revelation | 43 |
| Sir Serene | Revelation | 44 |
| Mr. Serene | DOA | 47 |
| Mr. Serene | 48 | |