Hover Gunner

Hover Gunner (ホバーガンナー) is a small hovering gun from Mega Man X4, X5 and X6. It appears in the stages of Jet Stingray, Split Mushroom, Cyber Peacock, Grizzly Slash, the second final stage of Mega Man X5, and the opening stage of Mega Man X6. Some Hover Gunners, like those in Split Mushroom's stage, fire in random directions, changing directions between shots. After firing a certain number of shots they will fly away.

Fly Gunner
Fly Gunner (フライガンナー) is a modified Hover Gunner that appears in Frost Walrus' stage in Mega Man X4.

Float Gunner
Float Gunner is a modified version from Mega Man X8 that appears in Noah's Park, Booster Forest, Inferno and Pitch Black.