On the Mode Select Screen (the one where "Story Mode" "VS Mode" etc., are displayed), press Left, Up, Right, Down, Square, Triangle, O. You will here a sound effect, and Char's Red Zaku will be selectable.
· Ball - Finish the game with all characters on any difficulty setting.
· Big Zam - Finish the game on the easy difficulty setting.
· Char's Zaku - ????
· Gundam - Finish the game with all Suits on the normal or hard difficulty setting.
· Hydra G - Finish the game on the hard difficulty setting with out losing.
· Psycho Mk III - Finish the game on the hard difficulty setting.
· V Gundam - Finish the game with all Suits on the hard difficulty setting.
· Zeue Ziel - Finish the game on the normal difficulty setting.