That's all I can think of.
Naruto the next generation is usually known as "Naruto Shippuuden" There are far too many characters to list here as there are 134 episodes so far and still going. There is a list of the characters names here: http://www.animenfo.com/animetitle,3936,zzdrfx,naruto_shippude.html
The characters are basically all the characters from the series of Naruto i.e. Naruto, Sasuke, Sakura, Shikamaru, Choji, Ino etc. The character you will play mostly is obviously Naruto however as the story progresses you can play as different characters. If you wish to find the entire list of characters in the game follow this link: http://en.wikipedia.org/wiki/Naruto_rise_of_a_ninja
there are no cheats on naruto arena to unlock all characters figer this out
how do you get the characters in naruto mini
GameFAQS.com has guides for characters. Go look there.
complete every mission there is and you should have all the characters
yes, all naruto characters are japanese they usually use english names for non-japanese characters in manga & animes
Go to www.leafninja.com and click on biographies.
Look on leafninja or Narutopedia.
This list covers tools and weapons used in Naruto
He's one of the easier characters for me, just make up a list of button combinations, and manage your chakara wisely.
There is a lot of them, haha animelyrics.com they will have a list of all the naruto opening's just look under "Naruto"