The Ninjas would be a little difficult to hit since, being Ninjas, were incredibly agile and occasionally difficult to target. They had the ability to momentarily stun Clank (Giant Clank) with a hit of their swords, causing significant damage. They also threw shurikens from a distance. The easiest way to defeat the Ninjas was to use Giant Clank's special attack, knocking them down, then fire missiles at them and finish them off with a melee attack.