What the title says.
For me it's Orochimaru. I got goosebumps when Orochimaru was truly introduced when Sasuke burned all the hell out of him (while diguised as Shiore, the female Grass genin) in the Forest of Death, only to just break out of the wires like they're nothing. Then what I thought was a women started talking to Sasuke and "her" voice started to turn into Orochimaru's real voice. I had no idea that this woman, Shiore, was actually Orochimaru, IMO the greatest villain this series has had.
For me it's Orochimaru. I got goosebumps when Orochimaru was truly introduced when Sasuke burned all the hell out of him (while diguised as Shiore, the female Grass genin) in the Forest of Death, only to just break out of the wires like they're nothing. Then what I thought was a women started talking to Sasuke and "her" voice started to turn into Orochimaru's real voice. I had no idea that this woman, Shiore, was actually Orochimaru, IMO the greatest villain this series has had.