Builder
From King Arthur's Gold Wiki
One of the three classes of King Arthur's Gold.
The builder's primary task is to mine for gold.
The builder can also build defenses, bridges and catapults.
Gameplay tips:
If you find a good gold vein, make sure you alert the rest of your team by quickchat ("7").
Similarly, make sure to look for the alerts of your teammates so you know where to find that sweet gold.