He was one of the most enigmatic of the urRu, spending most of his time on the fringes of the Valley of the Standing Stones in quiet solitude. UrSol claimed that urSen had foreseen his own death, and spent the next century contemplating it.
He eventually died after skekLach was killed during the Second Battle of Stone-in-the-Wood.
- Cesare, A. & Compiet, I. (2020), The Dark Crystal Bestiary: The Definitive Guide to the Creatures of Thra, Insight Editions, p. , ISBN 1683838211