Sakon and Ukon are villains in the series Naruto. They are Siamese twins who are a part of the Sound Four. Like their teammates, they participated in the Invasion of Konoha, assisting Orochimaru by putting up a barrier to prevent anyone from interfering in the battle with the Third Hokage. Their identities are unknown at this point, though they later become more prominent when they are sent to take Sasuke to Orochimaru.