Unlock Characters
Complete the following to obtain the secret support characters:

Gai, Kakashi - Defeat Level 1 and 2
Jiraiya - Beat the game
Sarutobi/Sandaime/The Third - Beat a chapter with a Hokage Rank

Extra Wallpapers in Graffiti Mode
All of the these games must be played on the same file:

Temari Wallpaper - Beat the game Three times
Ino Wallpaper - Beat the game Three times
Tenten Wallpaper - Beat the game Three times
Hinata Wallpaper - Beat the game Three times
Sandaime Wallpaper - Beat the game Twice.
Jiraiya Wallpaper - Beat the game Twice.
Kakashi Wallpaper - Beat the game Twice.
Kankuro Wallpaper - Beat the game Twice.
Gai Wallpaper - Beat the game Twice.
Gaara Wallpaper - Beat the game Twice.
Shino Wallpaper - Beat the game Once.
Kiba Wallpaper - Beat the game Once.
Neji Wallpaper - Beat the game Once.
Rock Lee Wallpaper - Beat the game Once.
Chouji Wallpaper - Beat the game Once.
Shikamaru Wallpaper - Beat the game Once.
Sakura Wallpaper - Beat the game Once.
Sasuke Wallpaper - Beat the game Once.
Naruto Wallpaper - Beat the game Once.