Haehaey

Haehaey (ハエハエー) is a fly-like enemy robot that appears in Pharaoh Man's stage in Mega Man 4 and Mega Man IV. Haehaey, along with Sasoreenu, only appears early in the stage in the surface. It flies over Mega Man and drops energy shots.

Other Media
Haehaey makes an appearance in the Rockman 4 manga, where its flies to Dr. Cossack's Citadel to report on Pharaoh Man's defeat.