Web Bolt

Web Bolt, known as Webolt (ウェボルト) in Japan, is an enemy from Mega Man ZX. It is a big yellow spider Mechaniloid that lives in power plants, and has evolved the ability to fire electric bolts to trap prey. It has an infrared sensor in its stomach, allowing it to operate just as effectively in the dark. Web Bolts appear in Area E Power Plant, where they climb up a fence from the background and down the other side before firing spheres of electricity at Vent/Aile.