| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Ace Stronghold | The Last of the Hybrid Wolves | 33 |
| Kuro no Hold | 48 | |
| Mr. Placeholder | 48 | |
| Mr. Stronghold | 37 | |
| Mr. Stronghold | 37 | |
| Mr. Stronghold | The Dirty Stronghold | 37 |
| Mr. Stronghold | The Dirty Stronghold | 38 |
| Mr. Stronghold | The Dirty Stronghold | 38 |
| Mr. Stronghold | The Dirty Stronghold | 38 |