FF - Best: Red Mage
Worst: Black Belt
FF4 - Best: Kain
Worst: Namingway
FF5 - Best: Faris
Worst: ExDeath (a tree? come on)
FF6 - Best: Celes
Worst: Sabin. No, Gogo.
FF7 - Best: Sephiroth
Worst: Don Corneo
FF8 - Best: Edea
Worst: Watts
FF9 - Best: Beatrix
Worst: Brahne
FFX - Best: Auron
Worst: Jecht
FF12 - Best: Balthier
Worst Vaan