| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Niv Mizzet | 48 | |
| Mr. Nivmizzet | 48 | |
| Mr. Superzet | 48 | |
| Mr. Superzet | 48 | |
| Mr. Szeth | 48 | |
| Mr. Wasinizet | Holy Sexy Union | 41 |
| Mr. Zet | The Light Side | 48 |
| Mr. Zethien | 48 | |
| Ms. Zethina | 48 | |
| Mr. Zetopuguel | 42 | |
| Mr. Zetsu | 48 | |
| Mr. Zetterberg | 48 | |
| Mr. Zzetta Zzeallottss | 48 | |