The Decapiclops (独眼独頭（どくがんどくず） Dokugandokuzu?, lit. "One Eye One Head") is the decapitated cyclops head boss who rules over the Demon Face Island (鬼顔島（きがんとう） Kigan Tō?) from Getsu Fūma Den that appeared in Chapter 11's crossover stage, "The Legend of Fuma", in Castlevania: Harmony of Despair. It is one of three sub-bosses that must be destroyed before reaching the final boss, Ryukotsuki. It becomes more powerful after either of the other two sub-bosses Oxocutioner and Chimyriad are destroyed. It can also be summoned by Ryukotsuki during the final boss fight.
|Enemy Data: Decapiclops|
|Image||Name - Game
|An accursed skull with only one eye||Soul: Decapiclops (3.5%)
- The Decapiclops makes a cameo in Chapter 20 of Warera Hobby's Famicom Seminar.
- The kanji on his helmet reads shi (死?), meaning "death/dead/die".