[SPOILERS S3] What was the point of this character?

I spent all 3 seasons waiting to see how he tied into the “knot”, with his missing eye and missing limb in the other world, and in the end he was just kinda…there?

I spent all 3 seasons waiting to see how he tied into the “knot”, with his missing eye and missing limb in the other world, and in the end he was just kinda…there?