Windcharger is the combined robot mode of three Mini-Cons Axle, Screw and Throttle. He assists the Autobots in searching the galaxy for deposits of raw Energon ore and defending them from the Decepticons.
A redeco of Energon Perceptor, Windcharger combines the three Mini-Cons Axle, Screw and Throttle into a single robot mode. He was never sold as a set; he could only be completed by getting all three individual Mini-Cons from different Japanese in-store promotions over the course of 2004.
The same mold(s) is(are) used by Heavy Metal.