| Ruler | Kingdom | Era |
|---|---|---|
| Mr. Aranel of Dorthonion | Umbrealla Corp | 27 |
| Mr. Ionionion | 48 | |
| Mr. Onion | United Realms | 29 |
| Mr. Onion | United Realms | 30 |
| Mr. Onion | Myrr | 31 |
| Mr. Onion | 47 | |
| Mr. Onion | 48 | |
| Mr. Onion | 48 | |
| Mr. Onion | 48 | |
| Mr. Onion Head II | ALL YOUR BASE ARE BELONG TO US | 48 |
| Mr. Onion Ruler | United Realms | 29 |
| Mr. Onion Ruler | 29 | |
| Mr. Onion Ruler | Myrr | 30 |
| Mr. Onion Ruler | United Realms | 30 |
| Mr. Onion Ruler | United Realms | 30 |
| Mr. Onion Ruler | Myrr | 31 |
| Mr. Onions | Ladybugs Taste Awful | 48 |
| Mr. Onions | The Brotherhood | 48 |