Switch Case Chronicles
Carin is a 220cm tall, light blue rock. They have four limbs, two of which fill the function of legs while the other two fill the role of arms (including grasping things). There is no extra lump on the top for a head, instead there is an area at the top of the torso which can be interpreted as a face, although it does not have expressions nor move when Carin talks.
Carin was found wandering tunnels in the vicinity of the community. They came back to the community, and since have made themselves useful in their strength.
In interactions with others they make points in as few words as possible, and avoid drawn-out interactions.