Power Rangers released toys of the Megazords- the Ranger's gigantic battle vehicles in various toylines over the years. Bandai America designed cheaper, more cost-effective, and streamlined Megazords beginning Operation Overdrive (Toyline). The term has come to include Bandai America Megazords that are neither Deluxe nor part of the greater ZordBuilder collective. While initially scrutinized, the quality of Transforming Megazords began improving with the next release in Jungle Fury (Toyline) (which initiated the label "transforming"), and later RPM (Toyline).