Denreth is a high-ranking druid of the Black Hand. He is exceptionally innovative, being responsible for the creation of both the Shapeshift and the Spirit Animal spells. He is also the leader of the Black Hand revival faction that planned the assault on Andris in 448.

Denreth first became notable in the early 430s, as a mercenary druid working for the Alliance. He was among the mercenary troops commanded by Jassen Andon who occupied a cave deep within the Marali Forest (subsequently known as the Mercenary Cave).

As of 449, the most recent reports suggest that he is leading a campaign to recover a powerful ring that has fallen into the hands of a chocolatier by the name of Lushe Satel – the same one responsible for selling the notes on the Spirit Animal spell to Brigobaen.