Shield Attacker (シールドアタッカー Shīrudo Atakkā?) is a recurring flying enemy that is indestructible in front. It can only be damaged attacking his back or attacking him with some of the special weapons. They first made an appearance in Mega Man 4. In Mega Man 7 they flip their shield face rather than turning around. In Mega Man 8, they are modeled after the Oni Mask boss from Mega Man 7, HannyaNED².