do all the missions.
if you unlock the china level you will enjoy seeing them there!
there are no cheats on naruto arena to unlock all characters figer this out
Here is a list: NarutoSakuraSaiKakashiInoShikamaruChojiLeeTen TenNejiKiba & AkamaruShinoHinataShizuneTsunadeYamatoIruka That's all i can think of right now
by searching for cheat codes to unlock all the stuff.
Naruto open his (rinnegan)eyes... lol what else you can say about it....
The key is to get your rank up and do all the missions.
it is the quest mode beat all of them to unlock a rasenshuriken . Also do jiraya's and naruto's quest mode to unlock minato.
get naruto six tails kyuubi in awu 3 to unlock all characters
Naruto Ultimate Ninja 3 unlock all the characters and you will get Naruto's dad the yellow fash
you must first finish all missions and then you can unlock them!
Leans forward with his arms straight behind his back in a V angle. Just like all the other ninjas.
Play a lot. =]