Rangval the Rogue was a resident of Mossflower Woods, a loyal and resourceful small squirrel, and self-proclaimed rogue. He lived in a small cavern hollowed out by a river that he called "Rogue's Retreat". Rangval was an expert at making traps and his favorite trap was Owch Mansions, a dead willow containing several hives of wasps and hornets. The squirrel seemed to have a gift for communicating with these insects. If vermin blundered into the branches, which he would tie across the stream, the stinging insects would often kill or badly hurt with several stings.
Rangval carried four daggers as weapons, which he could readily use. The daggers were his pride and joy, and he dreaded the thought of any other beast stealing or using them.
He met Maudie Mugsberry Thropple on the River Moss while she sailed with the Guosim as they were pursued by Brownrats. He saved them by tricking the vermin into Owch Mansions and lead the vermin off of their trail. He fought at the Battle of the Plateau, after the battle was won he followed Gorath to his confrontation with Vizka Longtooth.
Later, when he was sailing on the Eulalia, he was the only one of the crew to get seasick. He also become known as "Uncle Rangval" to Rowanbloom, and became the "unofficial Scout in Charge to the Long Patrol".