Xaldin is twine.
He is incredibly, undeniably tough, in a distinctly unpleasant way. Xaldin is coarse and rough against your hands and can rub at your skin or tighten around you painfully. He is unforgiving and puts up a hard outer shell because he doesn't know what else to do.
If you get on Xaldin's bad side it can get ugly, but he can also be very useful. Twine is a loyal thing- it will not betray you and snap right when you need it most. Xaldin is very, very versatile and can do just about anything.
Xaldin is twine.