| Ruler | Kingdom | Era |
|---|---|---|
| Duke Arzoon | Dark Blood | 32 |
| Mr. Derezoover | 48 | |
| Mr. Eezool | 48 | |
| Mr. Hawkzoom | Royal Order of Claidmore | 47 |
| Mr. Hawkzoom | Royal Order of Claidmore | 48 |
| Mr. Kazoo | 48 | |
| Mr. Kzoo | Dendarii Warmakers | 40 |
| Mr. Kzoo | Peacekeepers | 41 |
| Mr. Kzool | Dendarii Warmakers | 40 |
| Mr. Rubberzool | Earth Peace | 23 |
| Mr. Zond Zool | 48 | |
| Mr. Zoo | 48 | |
| Mr. Zooger | Excalibur | 32 |
| Mr. Zoogmaister | Excalibur | 32 |
| Judge Zoolander | THE GOOD SIDE | 19 |
| Mr. Zoolii | 48 | |
| Mr. Zoological Crazy Guy | 48 | |
| Mr. Zoom | 48 | |
| Mr. Zoom | 48 | |
| Mr. Zooo | 48 | |
| Mr. Zootalaws | 48 | |
| Mr. Zoots | 48 | |
| Mr. Zooty | 43 | |