Gundren Rockseeker is one of the three dwarf brothers who rediscovered Wave Echo Cave.  after being rescused from Cragmaw Castle he needs to recover but is eager to venture to Wave Echo Cave to learn the fate of his brothers, Nundro and Tharden. He knows that someone called the Black Spider orchestrated his capture and hopes that the characters stop the villain. Gundren has offered the characters a 10 percent share of the mine's wealth once his operation there is up and running.