Yggdra Union Cheats

Unlockable Characters
Cruz - In BF23, there's a little area near the exit. Go to it and a new exit will appear. Go there and you will end up at BF23.5 where you will recruit Cruz
Mistel - Search all two of the villages in BF13. You'll be taken to BF14I/II and you'll get her.
Nietzsche - In the map with the undines go all the way down in one town she be waiting for you.
Pamela - You recruit her in BF23 or BF24, by placing Nietzsche near by her - HARD MODE ONLY.
Russell - In BF20, head left and you'll eventually find Flone. Save her from Aegina and then place any character next to Russell in BF21.

Unlockables
Do the following to unlock the following:

Extra Contents: Just finish the game on any difficulty
Hard Mode: Finish the game once
Hyper Speed: Finish the game on any difficulty
Quotes: Finish the game on hard