| Term |
Age |
History |
|---|
| 1 |
12 |
Became a Citizen (Worker). |
| 1 |
14 |
Mason King is rewarded for Mason King's diligence or cunning. |
| 1 |
16 |
Promoted to Citizen (Worker) rank 1. |
| 2 |
16 |
Continued as Citizen (Worker). |
| 2 |
20 |
Spent time maintaining and using heavy vehicles. |
| 3 |
20 |
Voluntarily left Worker |
| 3 |
20 |
Became a Dolphin Civilian (Liaison). |
| 3 |
21 |
Mason King fail a dangerous mission to rescue people in a sinking vessel or underwater city. |
| 4 |
24 |
Continued as Dolphin Civilian (Liaison). |
| 4 |
25 |
Mason King discover a sunken vessel that contains valuable salvage. |
| 4 |
28 |
Promoted to Dolphin Civilian (Liaison) rank 1. |