Like most slaves in the area, he merely serves to help reinforce the setting and their predicament; in Canticle's case, his dialogue reinforces Gorion's Ward likely target - Davaeorn - while making the point that there's even more to be investigated.
|“||I was a bard, once. I knew every song that ever was and I could sing them all so beautifully. But now my throat's been choked by dust and my lungs have withered in this chilly air. A thousand curses on Davaeorn and whatever man it was that hired him!||”|