All zoids data,all commands,all parts,infinite gold,all items.all parts:

Unlimited Gold:
820282E8 E0FF
820282EA 05F5
All Commands:
420282DF FFFF
00000004 0002
All Items:
420217F6 6363
00000004 0002
All Weapons:
42028219 6363
0000002B 0002
All Zoid Cores:
420217FE 6363
0000000E 0002
3202181A 0063
Max Gold:
820282E8 E0FF
820282EA 05F5
Every Weapon:
32028219 0063
4202821A 6363
0000002A 0002
32028273 0063
42028274 6363
00000004 0002
3202827D 0063
4202827E 6363
0000000B 0002
32028298 0063
4202829A 6363
00000013 0002
All Zoid Data:
42021858 FFFF
00000009 0002
3202186A 00FF
All Zoid Parts:
42021826 6363
00000011 0002
32021825 0063
One Hit Win:
42035ED2 0000
00000006 0270
Infinite Experience Gained:
8203EBBC E0FF
8203EBBE 05F5
All information above from fishin.
Official codes from CMGSCCC.
Sent in by: beck_nas

Cyclopes Type One/Two, Diablo Tiger Data and Zoid cores - Successfully complete the game, then press L, L, R, R, Up, Down, Up, Down, Left, Left, R, R, Right, Right, Left, Up, Start at the title screen before demo mode begins.

Gilvader, King Gojula Zi Data and Zoid cores - Successfully complete the game, then press R, R, L, L, Down, Up, Down, Up, Right, Right, L, L, Left, Left, Right, Down, Start at the title screen before demo mode begins.

Weapons:-  The weapons that come with the Zoid you use are usually more powerful than the weapons that you can purchase. For example, the Blade Liger comes with a Shock Cannon, Energy Shield, and Laser Blade. These weapons not only do good damage, but do not use alot of EP and can be upgraded to do even more damage.

On your way to Mount town you find Mr or Dr.T on the ground and then take him to a house. Then he will ask you which type of Zoid you like best a Liger type or a Zaber Fang. Then he will give you that type of Zoid. You should chose the liger and you will get a Shield Liger because it has a stronger attack of 150 and the HP and defense is way higher too!

Unlimited money rating - 02027AB4:0098967F it will give you 99,999,999 gold

Unlock Special Zoids:

To unlock special Zoids (like Trinity Liger) beat mission mode with one side, then beat it with the other side.

To unlock the Blade Ligers, Gustav and Giga Gogulous beat Battle Mode with Van or a Zoid from the Zoid series.

To unlock Bit's 3 Ligers you must beat Battle Mode with someone from the Bit series

More Zoids  -  Complete the game, then go to the title screen, and enter: R, R, L, L, DOWN, UP, DOWN, UP, RIGHT, RIGHT, L, L, LEFT, LEFT, RIGHT, DOWN, START. You must enter the entire sequence before the demo starts. If you input the code correctly, you will hear a confirmation effect. You will have unlocked Gilvader and King Gojula Zi data and core.

Extra Zoids  -  Complete the game, then go to the title screen, and enter: L, L, R, R, UP, DOWN, UP, DOWN, LEFT, LEFT, R, R, RIGHT, RIGHT, LEFT, UP, START. You must enter the entire sequence before the demo starts. If you input the code correctly, you will hear a confirmation effect. You will have unlocked Diablo Tiger, Cyclopes Type One, Cyclopes Type Two's zi data and core.