....
Tidus:
-[Spiral Cut]: attack one enemy
-[Slice and Dice]: attack 8 consecutive cuts, random enemy
-[Energy Rain]: attack all enemies, 1 hit
-[Blitz Ace]: attack one enemy, heaps of hits, last hit [sphere shot] does 10x more damage than first string of hits
-Obatin by using Overdrives many times
Auron:
-1st one can't remember name, but attacks all enemies
-[Shooting Star]: Ejects enemy from battle
-3rd one...can't remember the name but its the only one I would use. It causes [Full Break] on enemy
-[Tornado]: attack two times if combination is correct
-Obtain by finding Jecht Spheres
Yuna
-[Grand Summon]: Aeons enter with OVER DRIVE fully charged
-Obtain: Defualt, works for all Aeons
Lulu
-[[magic spell name] Fury]: rotate right analog stick to cast the spell multiple times
-Obtain: Default, gain more spell fury as more black magic is learnt
Wakka
-[Elemental Reels]: Elemental attack depending on how you line the reels up.
1 element=normal attack
2 element = elemental (depending on colour) attack on one enemy
3 element = elemental on all enemies
-[Attack Reels]: THE ONLY OD YOU'LL WANT FROM HIM. The most powerful attack in the game. 12 hits of physical damage
-[Status Reels]:Status effects of enemy
-[Auroch Reels]:dunno, never used it, don't like it
-Obtain by winning blitz ball tournaments and leagues
Kimahri
-[Blue Magic], I don't remember them all, but there is [jump] [seed cannon] [stone breath] [nova] [mighty guard] and others
-Obtain just the same way as you obtain all other blue magic...get hit by the attack
Rikku
-[Mix]. You've used [Mix] in FFX-2 right? with the alchemist dressphere? its the same thing
-Obtain: default
SO IN SHORT, not everyone has 4 Overdrives, some have less, some have more
The I is moving 
I would rather live in my own shadow...at least then I would be compared to a past I'm more familiar with ~I~
Fear me, Hate me, Curse me, for I will question your every move ~I~
My past hold much pain and loss. I will conquer it by creating the perfect future ~Ixidor the Reality Sculptor (Magic the Gathering)~