The ninja stars are the fictional ninja stars of the Bakugan series. They were first introduced in the Japanese manga Dragonball and have become an infamous part of the series. A ninja star is basically a two-bladed sword that is made out of a very tough metal. The sword is often held by the shuriken, which is a small blade that can be carried around and is what becomes concealed in the star. A ninja star is basically a hidden weapon which is used as either a hidden blade or a disguised mace, with the use of a powerful katana.
The ninja stars are very traditional Japanese weapons, they feature a red circle with eight black stars surrounding it on the handle. The weapon is mainly used for stealth attacks but can also be used for close quarter combats, like when a martial artist gets up close to his opponent and hits them with the hilt of the sword. The shuriken itself is made out of two parts: a blade and a handle. One of the blackened blades is actually shorter than the other, giving it a sleeker and more elegant look. The weapon is made out of a metal that can withstand the heat of a flame, which is why the handle is coated in paint, so that it can withstand being dropped and kept clean, aside from making it more deadly when it is used properly.
The ninja stars are not only used for offensive purposes in battle, but they also serve as tools for stealth and espionage. Since the blade is not visible to your enemies, your opponent cannot see you and assess your position. This gives you the chance to slip up behind your enemies without them even knowing what you are doing, causing them unnecessary worry and confusion while you cause them unnecessary damage. Also, because these are extremely sharp weapons, they are perfect for cutting down any opponents who are bigger and stronger than you. Also, because they are extremely durable, it will not be hard for a skilled ninja to throw one into the air and then hit his enemy on the spot where you can cause him extreme amounts of injury.