Ganza

Background
The Web Novel doesn't metion his job, but according to the plot he is probably an alchemist, and he can compound the medicine requiered to work with Mithril.

Plot
When Dohal and Satou were about to forge a sword using Mithril, the medicine requiered in the process didn't had enough quality to Dohar, so he asked Zajuul to call Ganza to make a better one, but in that moment Ganza was having a meeting with the Gnomes.