Press L1 or R1 at the character selection screen. The red sign will change to blue. If you press L1 again you will get green. If you press Circle on either blue or green, you will get different costumes.
Cheat Mode
The codes are entered by selecting one of the five elemental symbols, then selecting the various twelve icons that are in the following layout:
1 2 3 4 5 6
7 8 9 10 11 12
All characters
Enter Lightning, Snake, Rat, Dragon as a code. In the Japanese version, enter Water, 12, 10, 4 as a code.
V-Jump Rank "S" mission
In the Japanese version, enter Lighting, 5, 10, 1 as a code.
Weekly Jump Rank "S" mission
In the Japanese version, enter Wind, 12, 5, 4 as a code.
Continue bonus
Start a new game with a memory card with a saved game file from the original Naruto: Ultimate Ninja to get 340 Ninja Info Cards and 50,000 Ryo.
Defeating Zabuza
Use the following trick when fighting Zabuza on the Hard difficulty setting. If he gets at least one chain of combos, you will be out for the count. The best thing that you can do is when he is about to attack is to go to the foreground or background; do not let him get any of his full Chakra techniques.
Fan Bonus
Begin a new game using a memory card that has a Naruto: Ultimate Ninja (1) save file on it. You will receive 340 Ninja Info Cards and 50,000 Ryo as a bonus.
Haku
Beat Haku with Uchiha Sasuke in story 4.
Hatake Kakashi - ANBU
Beat story 4.
Hint Scroll #1
Win the Tree Climbing game 3 times with times less than 1:20:00.
Hint Scroll #2
Get 3 shutout victories in Lee's push-ups mini-game.
Hint Scroll #3
Win Guy's Handstand Race 3 times with times less than 1:08:00.
Hint Scroll #4
Earn 3 perfect victories in Guy's Pose Challenge mini-game.
Hint Scroll #5
Earn 3 perfect victories in the Shadow Possession Challenge mini-game.
Hoshigake Kisame
Beat story 4.
Hyuuga Hinata - Successor
Speak with Hyuuga Hiashi outside the arena. Then at the rooftop. Then speak with Hinata at the training grounds. Head to the arena and beat Neji.
Jiraiya
Beat Jiraiya with Uzumaki Naruto in story 1.
Momochi Zabuza
Beat Momochi Zabuza with Jiraiya in story 4.
Naruto Shippuden Characters
Raise A characters level to the level in shippuden then give them the jutsu. For example, raise Sakura's strength and chakra then give her Tsunade's jutsu to make the new Sakura.
To unlock taijutsu Naruto you must talk to guy sensei and he will tell you to buy one of his siuts he will not tell you were it is but it is in Tanzaku Town talk to the merchant hiding behid the shed and buy the suit for 100,000 Ryo then go back and talk to him. he will say to find his secret training spot whish is on the outskirts of a certain place well then you start out the training by doing Guy senseis poses then you have to battle fight him 2 times but be careful because his attack will be stregthed and your defense will be lowerd.
Tsunade
Beat story 2.
Uchiha Itachi
Beat story 4.
Unlock all characters in USA version
Go to Naruto's house, go to the input screen, then put in the following password to unlock all characters: Lightning-Snake-Rat-Dragon.
Unlock Chuunin Exam Stadium
Go forward and back down the hole three times.
Unlock every single justsu
Go to Narutos house and go to enter code, it will come up with fire, land etc. Go to fire and go to ram then monkey then dragon it will not work the first time but it will work the next.
Unlock Forest Of Death
Hit the fish that jumps up sometimes in the river three times when it jumps.
Unlock Hero's Memorial Stone
Hit your opponent's support character four times.
Unlock Hokage's Face
Jump on the tree in the background ten times.
Unlock Ichiraku Ramen
Make all the lanterns red.
Unlock Kazekage's Place
Get three recovery items from the vending machine in the foreground.
Unlock Kikyoujyou
Stay on the tail of the fish for at least two counts when the wind is blowing.
Unlock Konoha Forest
Destroy five trees in the foreground and background.
Unlock Konoha Hot Springs
Half destroy the wall and the stand on both sides (foreground and background).
Unlock Naruto Bridge
Remain standing on the boat for five counts.
Unlock Outer Tanzaku Gai
Attack the snake five times.
Unlock Sand Stage
Destroy five of the things that are whirling in the tornado.
Unlock Snow Stage
Destroy ten of the things that appear in the foreground and background.
Unlock Tanzaku gai
Attack the slot machine eight times.
Unlock The Rainbow Icewall
Attack your opponent's support character five times.
Unlock Training grounds
Destroy eight of the things that appear in the foreground and background.
Unlock Watch Tower
Go forward and backwards on the snake and the frog without touching the ground three times.
Unlock Zabuza's Secret Hideout
Stay in the "attic" above the room with the area in the background.
Uzumaki Naruto - Kyuubi
Beat story 4.
Uzumaki Naruto - Maito Suit
Speak with Maito Gai at the marketplace. Head to the next city and buy a Maito suit (100.000 mon). Head to the next screen and fight Gai.