Kurobe began as an ogre, among the few survivors after orcs destroyed his village. He followed the ogre prince Benimaru seeking revenge, leading to an encounter with Rimuru Tempest. Resolving initial hostilities, Kurobe and the other ogres pledged loyalty to Rimuru. Receiving a name from Rimuru triggered his evolution into a kijin, a rare human-like ogre variant.

His primary role focuses on craftsmanship, not combat. He serves as a master blacksmith alongside Kaijin within Rimuru's nation, concentrating on forging and metallurgy. Kurobe possesses exceptional skill in swordmaking, considered unmatched in this craft. Calm and reserved, his personality contrasts with more prominent warriors. He often engages in technical discussions about materials and smithing techniques with Kaijin and the dwarf brothers Garm, Myrd, and Dord.

Kurobe wields a large, unnamed hammer as his weapon. However, following his evolution into a kijin, no documented battle participation exists. His key abilities stem from his Unique Skill, "Craftsman," evolved from the earlier skill "Researcher." This skill comprises "Omni Analysis" for examining materials and objects, "Spatial Storage" providing dimensional capacity, and "Transmutation" for manipulating materials. An Extra Skill, "Flame Manipulation," aids his forging work. He also possesses "Thermal Fluctuation Resistance," protecting him from extreme heat during smithing.