Vaan - Samurai Healer
Penelo - Black magic Gunner
Ashe - Knight Buffer (greatswords + buffs)
Balthier - Barbaric thief (Steal, swords and a few technicks)
Fran - Forest Ranger (items + crossbow)
Basch - Godmodder (zodiac spear + berserk)

Penelo the Black magic gunner is my favourite. The gun suits her so much :3