Gundam Battle Assault Codes -

Play as MA-08 Bygzam:
Complete story mode under the easy difficulty level.

Play as AMX-002 Neue-Ziel:
Complete story mode under the normal difficulty level.

Play as Psycho Gundam Mk III:
Complete story mode under the hard difficulty level.

Play as 0Z-15 AGX Hydra Gundam:
Complete story mode under the hard difficulty level without continuing.

Play as Gundam:
Complete story mode with the GP02A after defeating Gundam.

Play as New Gundam:
Complete story mode with the Zaku II after defeating New Gundam.

Play as Ball:
Complete the game with all twelve mobile suits under any difficulty setting.

Play as Char's Zaku II:
Press Left, Up, Right, Down, Square, Triangle, Circle at the mode selection. A sound will confirm correct code entry. Select versus mode, then keep pressing Right at the Gundam selection screen. This Gundam is by far the fastest, and is very good at combos. The differences are that it is a dark maroon-like color and has a small crest above its head. Note: Press L1(4), R1(4), L1, R1, L1, R1, L1, R1, L1, R1 at the mode selection screen in the Japanese version of the game.

Alternate colors:
Press Start + X at the versus mode screen.