Oruit

When the Divine Capital was attacked, the Satanists sacrificed their own lives to summon a high-ranking demon known as the "Dark Marquis." This demon, who carried himself with the air of a nobleman, confronted Killer Queen and Mink in front of the Holy City, leading to a fierce battle. Tron deployed "Abyss," weakening Killer Queen and his allies and temporarily gaining the upper hand. However, the situation reversed when Zero Kirisame intervened. Tron tried to recover by absorbing Zero's blood, and finally transformed into a monster to launch another attack, but was easily shattered by Zero's fist. In the novels and manga, the character is referred to as "Dark Marquis," but in the anime, he is called "Dark Duke," though it is unclear whether this was a typographical error.