Sasuke
Sasuke is some times easy to spot, but he is one of the dozens of faceless male ninja in the series. These male ninja are seen in different outfits, but never without their masks. Onsokumaru and Shinobu seem able to tell them apart. They share many of Onsokumaru's traits, although they are more kind hearted and conscientious, attempting to act noble and wise. They have a tendency to act with a 'hive mind', but are easily distracted and get little done. There is still debate over whether they are actually a single ninja using the ever-popular "copy art" ("bunshin no jutsu").