Very little is known about Rookshyyr in the early days. He had a brother - Arrykabacc - but their families do not speak of either of them. In fact, neither Rook nor Arry have been SEEN on Kashyyyk in decades. There are rumors, however. The rumors would suggest Rook and Arry broke sacred wookiee law in some manner or other, and were banished to the forest floor - the Shadowlands. Arrykabacc has not been seen since. Rookshyyr was a favourite.