Unlike several other transformations, Kirby and Prince Fluff remain separate and autonomous after transforming, becoming two separate engines. While in this form, they can only move by driving back and forth (left and right) and can make only a single jump. The main feature of this transformation is the ability to fire a constant stream of water from the hose on the top of the engine. This can be done in any non-downward direction, and can also be done while moving.
Making use of this stream of water is essential for the sections the Fire Engine appears in, as the water can knock down beads, defeat enemies including fiery ones that cannot normally be defeated, quench flames, and create platforms on the surface of lava. As the direction of the water stream depends on the way the Wii Remote is being tilted (in the original game), aiming while moving around can be tricky.
Kirby using the Fire Engine to douse a big flame in Lava Landing
Kirby using Fire Engine to knock down beads in Temper Temple
Leaping while spraying water in Meta Melon Isle
Names in other languages