Odin Sphere was definitely a great game. I kinna preferred playing as Cornelius myself... I never finished the entire game, unfortunately... my game froze up during Oswald's scenario during a boss fight (I died simultaneously as the boss) and never went back to it.
If you have a Wii, you should look into Muramasa: The Demon Blade. It's done by (and is very similar to) the Odin Sphere team, only done with Japanese mythology instead of Norse.