Nightmare Zero
	Nightmare Zero or the Zero Nightmare, appears in Megaman X6 for playstation. In Zero's attempt to stop Sigma, he was never seen again. However, many robots killed themselves, or malfunctioned because of Nightmare Zero. Many want to destroy it, but Megaman will never believe it. After Megaman is forced to beat Nightmare Zero, the real Zero returns, and turns out that he was healing himself after the crash with Sigma.