Doppelganger Fiends (魔神ドッペルゲンガー Doppleganger Majin?) are considered one of the more sinister and deadly warriors of the Fiends, due to their ability to assume a fiendish form of, and mimic abilities of their enemies, right down to their combat skills and powers. They are normally encountered on higher difficulties. Although most encounters are single combat, they may also attack in groups of 2 or more.