Cheat One Piece PS 2

Disc Eject Glitch
[PS2 Cheat by: Cheat Masters ]
You can get rid of the A.I.'s support characters with this exploit. If you open the disc tray/cover as soon as "FIGHT!" appears on screen, you can battle as normal without their supports interfering. When the battle is finished, you need to close the disc tray/cover to let the game resume. This works best for the Slim PS2, since pressing the disc eject key on the old boxy PS2s may result in the game resetting. This does not cancel permanent effects, environmental changes, or supports that are summoned during the battle.

Unlockable Cast
[PS2 Cheat by: Cheat Masters ]
Chaser - You must access Chaser's adventure mode. First, level him up, then use his Secret Attack.
Eneru - During Mr. 0 Crocodile's adventure mode, you must use him once in battle when he joins the crew.
Hawk-Eyes Mihawk - Go into Chaser's adventure mode, use him once in battle after he joins the crew.
Zeff - Use Chaser's adventure mode and get Zeff to Lv. 15. Then use him once in battle.
Kuina - Same as Zeff -- level her up to 15 in Chaser's adventure mode and use her in battle!
Chaser - Same as Zeff -- level him up to 15 in Chaser's adventure mode and use him in battle!
Eneru - Use him in battle after he joins the party in Crocodile adventure mode.
Ohm - Use him in battle after he joins the party in Crocodile adventure mode.
Mr. 2 Bon Clay - Use him in battle after he joins the party in Crocodile adventure mode.
Portgaz D. Trace - Use him in battle after he joins the party in Buggy's adventure mode.
Red-Haired Shanks - Use him in battle after he joins the party in Buggy's adventure mode.
Nico Robin - Use her in battle after she joins the party in Luffy's adventure mode.
Other Support Characters - To unlock support characters you need to use a support character in 3 battles, In adventure mode. After you have done that they then can be used by any character in Grand Battle mode.
0 Crocodile and Chaser's Adventure Mode - Beat the Crocodile in Luffy's adventure for 0 Crocodile's adventure; in the same session, defeat Eneru in Luffy's mode to get Chaser's adventure.
Unlock extra costumes - All Straw Hat characters (except Vivi) start with their 1P and 5P costumes. Robin will start with an additional 4P costume. 4P, 3P, and 2P costumes/outfitswill be unlocked as you progress through the game. To unlock Luffy's 2P, make sure not to fight Crocodile until after you have travelled to Jaya and are prompted to finish Crocodile before proceeding, or your game will end at the 1st Crocodile fight!
Chopper 2P - Get the bonus item "Santa Hat" by beating Ace(Trace) using Chopper at a Wrecked Ship in the Graveyard of Ships.
Chopper 3P - Get the bonus item "Polo Shirt" at Pepper Village in the Drum Kingdom Sea Area by beating Chopper in 20 counts.
Chopper 4P - Get the bonus item "Panda T-shirt" by beating Nico Robin with Chopper at Erumalu in Alabasta Kingdom Sea area.
Robin 2P - Get the bonus item "White Hat" by beating Ohm the 1st time at the Ruins in Skypiea.
Robin 3P - Get the bonus item "Kimono" at Misty Peak in the Drum Kingdom Sea area by beating Nico Robinwith and retaining more than 50% of your HP.
Nami 2P - Get the bonus item "Yellow T-shirt" by beating Buggy at Vermillion Town in Jaya Sea Area with Nami.
Nami 3P - Get the bonus item "Cheerleader" by beating Nami with more than 70% of your HP remaining at Coco Village in the Roguetown Sea Area.
Nami 4P - Get the bonus item "Fashionable Sunglasses" by beating Chaser at Navy Base No.64 in the Inshore Alabasta Kingdom area.
Usopp 2P - Get the bonus item "White Bandana" by beating Kuro at Mock Town in the Jaya Sea area.
Usopp 3P - Get the bonus item "Chestpiece" by beating Usopp without getting knocked down.
Usopp 4P - Get the bonus item "Sunglasses" by beating Nami at Coco Village without knocking her out.
Sanji 2P - Get the bonus item "Gaudy Shirt" by beating Don Krieg at Vinegar Village in the Jaya Sea area with Sanji.
Sanji 3P - Get the bonus item "Soccer Uniform" by beating Sanji without jumping during battle at Carmine Town in the Orange Sea Area.
Sanji 4P - Get the bonus item "Necklace" by beating Chopper at Big Horn in the Drum Kingdom Sea area with Sanji.
Zolo 2P - Get the bonus item "Goggles" by beating Arlong at Spice Village in the Jaya Sea area.
Zolo 3P - Get the bonus item "Judo Wear" by beating Zolo with a super attack at Red Town in the Fusha Village Sea Area.
Zolo 4P - Get the bonus item "Necklace" by staying alive for 30 counts against Hawk-eye Mihawk at Blue Town in the Syrup Village Sea area.
Luffy 2P - Get the bonus item "Pirate Coat" by beating Crocodile the 1st time at Alubarna in the Alabasta Kingdom Sea area using a super attack.
Luffy 3P - Get the bonus item "Baseball Uniform" by beating Luffy with more than 30% of your HP remaining at Mustard Village in the Fusha Village Sea Area.
Luffy 4P - Get the bonus item "Cool Shades" by beating Buggy with an item at Orange Village in the Orange Village Sea area.

Versus mode passwords - These cap-sense codes unlocks the L100 character in VS mode only.

VBbPVJDcZM9NyNMf - Crocodile
Zzqs6PLNWqwblXBH - Enel
xLtwnrJ1VKLmSwCg - Kuina
pP72dQw83R7Wdfnf - Mihawk
GjfrK92hjyzFB7BC - Nami
m6mzsmwWg7618qgL - Sanji
P9wRrM9Bw86cK528 - Trace
byfyrsCwFRZx9dDZ - Wapol

Kuina
You musy recruit her in Chaser's adventure mode, and at some point, use her Secret Attack.

Eneru
During Mr. 0 Crocodile's adventure mode, you must use him once in battle when he joins the crew.

Chaser
You must access Chaser's adventure mode. First, level him up, then use his Secret Attack.

Characters
Beat Crocodile in Luffy's adventure mode to unlock Buggy and Mr. 0 Crocodile's adventure mode, continue with Luffy's adventure and defeat Eneru to unlock Chaser's adventure mode.

Unlockable How to Unlock
Nico Robin In Luffy's adventure mode, use her once in battle after she joins the crew.
Red-Haired Shanks In Buggy's adventure mode, use him once in battle after he joins the crew.
Portgaz D. Trace In Buggy's adventure mode, use him once in battle after he joins the crew.
Mr. 2 Bon Clay In Mr. 0 Crocodile's adventure mode, use him once in battle after he joins the crew.
Ohm In Mr. 0 Crocodile's adventure mode, use him once in battle after he joins the crew.
Eneru In Mr. 0 Crocodile's adventure mode, use him once in battle after he joins the crew.
Chaser In Chaser's adventure mode, get Chaser to Lv. 15 and use him once in battle.
Kuina In Chaser's adventure mode, get Kuina to Lv. 15 and use her once in battle.
Zeff In Chaser's adventure mode, get Zeff to Lv. 15 and use him once in battle.
Hawk-Eyes Mihawk In Chaser's adventure mode, use him once in battle after he joins the crew.
Support Characters In adventure mode, use a support character in 3
battles, then they can be used by any character in Grand Battle mode.

Unlockables
One Piece: Grand Adv. UnlockablesUnlocking Extra Costumes- Straw Hat Pirates
All Straw Hat characters but Vivi start with their 1P and 5P costumes/outfits, and in Robin's case the 4P as well. In general, 4P costumes/outfitswill be found first, while 2P costumes/outfitsappear later in the game and are more complicated to get. Any costumes/outfitsunlocked in Adventure mode will be usable in every other mode.
In unlocking Luffy's 2P costume/outfit, make sure not to fight Crocodile until after you have travelled to Jaya and are prompted to finish Crocodile before proceeding, or your game will end at the Crocodile fight.
An easy way to beat Ace(Trace) with Chopper in the Graveyard of Ships is to use Chopper's "Health" attack (Jump+O) non-stop. Beware of rolling bombs.

Unlockable How to Unlock
Luffy 2P Obtain the bonus item "Pirate Coat" by beating Crocodile the 1st time at Alubarna in the Alabasta Kingdom Sea area with a super attack
Luffy 4P Obtain the bonus item "Cool Shades" by beating Buggy with an item at Orange Village in the Orange Village Sea area
Zolo 2P Obtain the bonus item "Goggles" by beating Arlong at Spice Village in the Jaya Sea area
Zolo 4P Obtain the bonus item "Necklace" by staying alive for 30 counts against Hawk-eye Mihawk at Blue Town in the Syrup Village Sea area
Sani 2P Obtain the bonus item "Gaudy Shirt" by beating Don Krieg at
Vinegar Village in the Jaya Sea area with Sanji
Sanji 4P Obtain the bonus item "Necklace" by beating Chopper at Big Horn in the Drum Kingdom Sea area with Sanji
Nami 2P Obtain the bonus item "Yellow T-shirt" by beating Buggy at
Vermillion Town in Jaya Sea Area with Nami
Nami 4P Obtain the bonus item "Fashionable Sunglasses" by beating Chaser at Navy Base No.64 in the Inshore Alabasta Kingdom area
Usopp 2P Obtain the bonus item "White Bandana" by beating Kuro at Mock Town in the Jaya Sea area
Usopp 4P Obtain the bonus item "Sunglasses" by beating Nami at Coco
Village without knocking her out
Chopper 2P Obtain the bonus item "Santa Hat" by beating Ace(Trace) with Chopper at a Wrecked Ship in the Graveyard of Ships
Chopper 4P Obtain the bonus item "Panda T-shirt" by beating Nico Robin with Chopper at Erumalu in Alabasta Kingdom Sea area
Robin 2P Obtain the bonus item "White Hat" by beating Ohm the 1st time at the Ruins in Skypiea