No, the little puppy dog guy. He showed up a couple episodes ago as Rimuru's guy in charge of commerce with the beast nation. But he was already a part of Rimuru's nation, and I don't remember recruiting him.
I know where pretty much everyone else in Tempest Kingdom came from. The goblins, the wolves, the dwarves, the orcs, the lizardmen, the oni, etc. , but I don't remember them recruiting a Kobold.