Kirby uses the Rainbow Sword to fight Dark Matter in Kirby's Dream Land 2. If Kirby hasn't collected all the drops, the Sword is not formed, and the bad ending plays instead. It does not fire projectiles, unlike most other Final Weapons, but it can reflect Dark Matter's attacks. In direct combat, it deals a fifth of a point of damage to Dark Matter's swordsman form and a third of a point of damage to Dark Matter's true form. When using the Rainbow Sword to reflect attacks, a single reflected star hitting the swordsman form deals one point of damage, and two points when it reflects a "petal" of the final form.