| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Gnat | 47 | |
| Mr. Grugnath The Vengeful | Unholy Union | 48 |
| Mr. Gugnath | 47 | |
| Mr. Hathor Magnate The | Peacekeepers | 14 |
| Mr. Ignatious The Reaper | 47 | |
| Mr. Magnatus | 48 | |
| Mr. Magnatus | Mighty Alliance | 48 |
| Mr. Magnatus Prime | 48 | |
| Mr. Magnatus The Small | 48 | |
| Mr. Vapor Runs From Magnathorax | Fate | 45 |