| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Gaius | 48 | |
| Mr. Gaius | Planet Hollywood | 48 |
| Mr. Gaius Julius Caesar | Confederate States of America | 47 |
| Mr. Gaius Julius Caesar | Confederate States of America | 48 |
| Sir Gaius Septim | Templar Crusaders | 27 |
| Duke Gaius Septim II | Templar Crusaders | 28 |
| Emperor Gaius Septimus Cidellus | 47 | |
| Mr. Gaiuspriest | 48 | |
| Mr. Marius Gaius | 33 | |