| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Great Observer | Dark | 36 |
| Sir Great Observer | 48 | |
| Mr. Hannibal The Observer | Twenty Twelve | 47 |
| Mr. Observe | HISTORY MATTERS | 47 |
| Mr. Observe | HISTORY MATTERS | 48 |
| Mr. Observer | Fate | 43 |
| Mr. Observer | Fate | 44 |
| Mr. Observer | Fate | 45 |
| Mr. Observer | 48 | |
| Mr. Ryan The Observer | Lost Souls | 47 |