The Void Knights are an order of knights loyal to the god Guthix. They oversee the Pest Control minigame.
The main duty of the Void Knights is to maintain the balance that Guthix created in Gielinor. Originally this entailed the occasional assassination however in recent years creatures from another dimension have broken into Gielinor and occupied trillions of identical islands in the far south. The presence of these creatures has upset the balance and so several Void Knight outposts have been established to monitor and close the portals on these islands. However, the creatures have become more aggressive and have overrun some of the outposts. The Void Knights are now calling players to help them seal the portals in the minigame Pest Control.
The Void Knights' Outpost is currently the only known Void Knight area in Gielinor. It is on this island that they sell normal equipment, lead assaults on the neighbouring islands and exchange commendation points for Attack, Strength, Defence, Ranged, Magic, Hitpoints and Prayer experience, Void Knight equipment, herbs, minerals and seeds.