According to his journal, he and his cohorts were members of the Knifepoint Gang but were expelled for unknown reasons. The three were hiding out at Halldir's Cairn, but were then held there by Halldir, who forced Agrius and the others to sacrifice themselves for his magic.
- The name Agrius comes from ancient Greek mythology. Agrius was a half bear, half man giant. This bandit was probably named this, because of his beard and bear-like features.