After completing Story mode, play Act 3, Stage 1 again with Amitie. In the intermission sequence, Amitie wants to join Draco Centauros' beauty contest and hears something in the bushes. Harpy and Witch from the original Puyo Puyo will then appear from the bushes.
Unlock the following characters by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK Carbuncle - Complete Act 3 with all alternate characters. Dark Arle - Complete All chapters with all alternate characters. Draco Centauros - Defeat Draco Centauros in Episode 11. Ecolo - Complete Story mode. Maguro - Complete Act 1 with all alternate characters. Risukuma - Complete Act 2 with all alternate characters. Skeleton-T - Defeat Skeleton-T in Episode 1.
At the title screen, hold L + R then press UP, DOWN, RIGHT, LEFT, X, B, Y, A. The sound of a bell will confirm correct code entry, indicating that all bonus characters and a completed gallery are now unlocked.