Kurobe

Kurobe (黒兵衛) is a Fair Oni and is one of the top blacksmiths of the Jura Tempest Federation. He as well lives in the Capital city of the Jura Tempest Federation: Rimuru City.

Trivia
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 * There is a franchise-wide running gag involving Kurobe that is about the fact that no matter what, he never manages to get on the cover, be it Light Novel, Manga or spin-off Manga, he doesn't appear on any of them. Even in the anime he is never shown in the openings aside from one shot that shows him in the background while walking, though even in that case his face happens to be hidden by a tree branch that prevents the audience from seeing his face.