Ninja is the word for spy or assassin in Japanese. They are expert at hand-to-hand combat and concealing their weapons. The bo is a perfect example; it looks like an ordinary bamboo stick, but in the hands of a Ninja, watch out! Or look out for the shuriken — throwing stars. They're just flattened pieces of metal with points, but you don't want to get in the way when a Ninja starts throwing them around! How many stars are hidden on this Ninja?