Goblins

The goblins are a newly intelligent goblinoid ancestry.

The goblins of the Hollow originate in the Underdark. When they come of self-sufficient age, about three years, they usually feel an uncontrollable urge to come to the surface world. They then are unable to remember much of their Underdark lives, due to a sort of infantile amnesia. The only known "source" of goblins is the caves of the Ghom Tarom mountains. These mountains are famously treacherous to low-level adventurers, as they're home to many goblin tribes among whom a rich culture of mischief, raiding and robbery thrives. Dwarven traders traveling to and from Rumadir are usually left alone, as they tend to be hardier and know their way around the daggerlike peaks.

During the Big Itch the city of Hillsink saw a huge influx of goblin immigration. These goblins were newly sapient and thirsty to join civilization. Many of them became artificers, tinkers and the like.