Slaves and illicit goods were smuggled into and out of Phandalin via a secret tunnel which connected to the basement of their base beneath Tresendar Manor. In addition, they would capture travelers to be sold as slaves. The Redbrands terrorized Phandalin's locals with threats and demands for protection money, which escalated into murder and kidnapping. They were led by a mysterious wizard who they called Glasstaff. These cloaks were recognized by the undead in their hideout, Tresendar Manor, and stopped them from attacking the bandits. Each Redbrand wore a simple, dirty scarlet cloak.
The Redbrands mostly consisted of humans, male and female, although a handful of bugbears were also in the bandit group.