In the Thieves Guild questline, during the "Dampened Spirits" quest, it is revealed that Mallus is a Guild associate who plans to ruin his master's business and steal it for Maven Black-Briar. After the quest is completed, he is available as a fence. Unlike ordinary merchants, Mallus, who runs his fencing operation at the Honningbrew Meadery, is open for business around the clock.
- His voice actor is Stephen Russell, a voice actor from the video game series Thief.
- The Elder Scrolls V: Skyrim (First appearance)