Stone is a conqueror in the campaign mission. He shows up in the mission "And Stay Out!" and he and the Warden become friends. He is a member of the Iron Legion, and has no criminal backstory, unlike the rest of the conquerers. His appearance is similar to other conquerers, with a few accessions. His helm is that of a kettle hat with a mask similar to a pot helm. On the top of the helm he displays a hewn skull, which shows his vicious character, despite being one of the characters that rebels against Apollyon. After the "And Stay Out!" mission, he shows up again in the next campaign, as the Warden shares her thoughts about the Blackstone Legion. He fights with the Warden throughout this mission, but afterwards does not show up much. He was involved in the Siege of Apollyon's fortress.