Advance Guardian Heroes Cheats (GameBoy Advance)

Finish the game on Normal difficulty.

Finish the game on Hard difficulty.

Beat Super Hard difficulty.

Spend crystals between stages during the campaign or clear time attack. As data completion
increases, new characters are unlocked. 

Default - Enn

Default - Hyu

Default - Ray

#1 - Goblin

#2 - Dylan

#3 - Soldier

#4 - Cyclops 

#5 - Goblin Tank

#6 - Sorcerer

#7 - Roper

#8 - Han

#9 - Heavy Gear

#10 - Gargoyle

#11 - Edo

#12 - Sky Knight

#13 - Valgar

#14 - Zur

#15 - Cerena

#16 - Nicole

#17 - Kanon

Finish Time Attack mode multiple times to unlock new characters or donate gems in story
mode to the laboratory.

Beat the game on Super Hard difficulty.