I couldnt agree anymore. Oro is intelligent, has a shyt load of jutsu, fast, immortal, evil, etc. Not many shinobi could actually defeat him, except those with great genjustu or sealing ability (certain ones). No one could have created his own "villiage" and turn villiage against each other, while killing both of their Kages and still be alive. Akaskuki (mis-spell) members wanted him dead, yet never were able to. This dude was basically invisible, but as all characters (villains) they has a weakest and are usually put up against it (Madara vs 1st, Tobi vs Minato, Naruto vs Sasuke) and his was Itachi.