Dark Necrobat

Dark Necrobat (ダーク・ネクロバット Dāku Nekurobatto), also known as Dark Dizzy,[2] is a vampire bat-based Reploid from Mega Man X5.

Necrobat was a Maverick created by Sigma three years before the events of Mega Man X5, but escaped from his control and remained in hiding since then. Sigma, not considering him a serious fighting power, forgot about him. The Maverick Hunters encounter him in a planetarium somewhere in northwest Sudan while they are looking for a Fuel Tank for the Space Shuttle. However, he proves to be a fighting serious power to both X and Zero, proving Sigma wrong indirectly.