Whirling

Whirling is the name for two varieties of the same enemy from Mega Man ZX. They both appear as a green central body that hangs on an extendable chain from the ceiling. When approached, they will extend their chains and swoop down towards the player while spinning rapidly to damage them.

Whirling
This variety has many blunt but hard metal protrusions around the central body with which to hurt the player. This is also the only variety that can fire, and it shoots small yellow energy spheres. It appears in Area I Confinement. 

Whirling Blade
This more common variety has four curved blades around the center that spin much like a sawblade. It appears in Area E Power Plant, Area B Mountain Pass, and Area A Forest.