Also, I have a question. I am curently at the Stilshrine of Miriam but Im having trouble. When I go to the Way Stone, it says it is still asleep. But when I go to the peddastool thingy, it says nothing happens and zambies come out. What do I do?
You need to equip the Dawn Shard to a character then touch the pedestal with that character. It is best to equip it to a character that you don't use and have them touch the pedestal since you'll lose all your MP from having it equipped.
As for the questions...
1. Balthier (would be Vossler if I could control him)
2. Basch's Level 2 Quickening (can't remember the name)
3. Basch
4. Fury (Necrohol boss)
5. Zalera, though Belias has been the most useful Esper so far.