Derek Mongrail

Sir  was a knight of Baron Daelrath. He served as the baron's chief and arms master of cavalry. He was also in charge of the bowyers and fletchers, despite not being a good archer.

He met Brianna Barter, disguised as Valkura, when she brought the troll heads to Rath Keep in order to collect the bounty offered by the baron. Not many years prior, he was an adventurer and a member of Daelrath's group of cronies.

Later, disguised as Celena Medea, Brianna met as part of Daelrath's entourage in the Town of Springville.