Erina

The erina are a race of bipedal folk that resemble hedgehogs. Originally created by druidic Shadow Fey they quickly adapted to the shadows and have learned to thrive in the dark forests and underground warrens. Their natural propensity for exploration and their unrivaled burrowing skills mean that they’ve tunneled their way to many a strange new locale—including the material planes. They’ve primarily settled around the western and central woods, but regular bands of explorers, naturalists, and wilderness guides have established underground camps throughout the realm.
The shadow fey are not entirely pleased by the erinas’ wanderlust (making them less than entirely useful servants) nor with their open policy of assisting travelers in and out of the Shadow Realm through their underground shadow roads. However, at least for now, it is easier for the shadow fey to ignore these aspects of the crafty survivalists.