The RV Mechas have been dismantled and their parts scattered all around, so it is up to the Carrangers to collect all the parts required to rebuild them, all the while fighting the Bowzock gang. The parts appear in the form of cogs and gears, and can only be obtained by striking various objects and killing off Wumpers along the way, among other forms (finding and getting an engine, for example, will give off ten parts). Each Mecha requires 50 parts to be rebuilt.