A common copy ability throughout the Kirby series that turns Kirby into a ninja capable of wielding a katana and throwing kunai.
This form has varied throughout the years, but in its modern form, Kirby wears a purple cowl along with a blue headband that comes with a studded star. In older games, Kirby wears a red hat with a blue ponytail sticking out, and in some cases, take on a purple hue.
This tag implicates kirby (learn more).