Cursed Warrior

Noroimusha (called Cursed Warrior in the VIZ English dub) was a ghostly samurai who supposingly came from the Land of Birds.

History
It was believed to be the ghost of the former bird daimyo, Owashi. Ever since Owashi was descretely poisoned by the Watari ninja Oki (taking the guise of Moso), Noroimusha had been haunting the Bird country and attacking Moso and several other of its inhabitants. Overtime, the people began to suspect Komei, the Bird country's tactition, was behind Noroimusha. During the first battle with Team Neji, after being attacked for a short while, vanished completely, leaving the empty armor behind. Also, Neji said that there was no human presence inside.