I: Black Mage (duh)
II: Minwu (loved his costume and his spells were at badass levels in the beginning)
III: Ingus (he was the sarcastic one right?)
IV: Rydia (strongest character in the game also the least sappy)
V: Galuf (feisty old man is pure comedy)
VI: Terra (I love her story and she's also a magical powerhouse)
VII: Cloud (probably the best protagonist of the series)
VIII: Quistis (dig the hot teacher thing going on)
IX: Quina ()
X: Auron (he's the only voice of reason in this team filled with hormonal teenagers)
XI: Tmoney! (that's me!)
XII: Balthier (had the best dialogue of any character, screw you Highwind)
XIII: Hope (in a story about character development, he's the only one who really develops at all)