This article is about the
dwarven researcher. For the member of the
Five Elders, see
Johann Rostia.
Johann ｢ヨハン, yohan｣ is a doctor who was employed by Vesta to help assist in the research of potion production within Tempest.
Personality
When Rimuru asked Vesta whether Johann could be a good asset to their research, Vesta described Johann as being trustworthy and talented.