Chaos Sorcerer and other Duelists of Death are first seen as spectators during The Supreme King's Duel with Jim Crocodile Cook. During Axel Brodie's infiltration of The Supreme King's lair alongside Zane Truesdale and Aster Phoenix, their cover is blown when they tell Chaos Sorcerer that they are delivering Skull Knight's report to The Supreme King. Chaos Sorcerer reveals that all of Skull Knight's reports are to go through him first before making it to the King, so the infiltration is exposed. As a result, Zane stays behind and duels and defeats Chaos Sorcerer while Aster and Axel make their way further into the castle.