Hunter Ninja

Base of Operations: Hidden Village
Classification: Specialized Ninja Squad
Member Appearances: Haku

These shinobi hunters search for ninja who have abandoned their village. Nicknamed the "Undertaker Squad" they have a high knowledge in physiology to further their killing abilities. Once they kill their target, they will dispose of the body without a trace. This is because a ninja's body has within it secrets of the village's ninjutsu, chakra types, herbs and other information about the village. They will then take the head back to the Hidden Village as proof of their kill.

Haku wore the mask of a Hidden Mist Hunter-Nin who he presumably killed. Though it is not officially stated, Haku did have a similar high level of skill a real Hunter-Nin would possess.