Here is some insight on the three characters you can play in the prologue. This will be really brief, because my drunken roommate isn't likely going to give me much time. So:
Auril is a psionic adept who is the leader of the prologue party. She has the ability to shift in to a form comprised entirely of ethereal matter. In this form, she can slip past walls and obstacles. She can change forms in the middle of battle much like Skully. Her ether form has enormous potential for magic damage, but is very fragile. She uses the Bow.
Elyas is a mystic (he can conjure wings much like Tsujin). He can skip his turn to embrace in a divine light, giving him new tech skills for the battle. This move is very much like Baru's charge. Elyas is the only character from the prologue that the characters know exist today. He eventually advanced to Seraph (the highest rank) in Celest (a city on a floating island in the sky).
Exolix used to be a mercenary until Kressalack's attacks began. He has an unusual ability to resist magic, so when faced with Kressalack's demon magic, he was instead infested by the dark energy. He has managed to control the dark energy within him, releasing it in a terrifying spurt of energy. He can embrace the dark energy in battle enabling a huge selection of dark magic, but it drains MP each turn. This skill is much like Tsujin's wing conjuration.Auril, Elyas, and Exolix have skills similar to Baru, Tsujin, and Skully. What are their personalities like? Well, you'd have to play the prologue to find out. Kahahah.
