Last Boss

bemorespecific

basically though, Deprotect/Deshell/Imperil/Slow him (you don't need Slow but Fang should have all these,) Poison him if you have it. buff people so they at least have Haste/Bravery/Enfire (after Imperil, think this is the default En-elemental)/Veil helps to avoid instant death/status effects. once that's all in place RAV/RAV/RAV to stagger and then wail on him with COMs. Combat Clinic (MED/SEN/MED) for after he does Merciless Judgment.

if he's dealing too much damage, particularly when about half his health is gone, you could always switch to a mixed offensive/defensive paradigm like Diversity (COM/RAV/MED, or RAV/RAV/MED provided you switch to use a COM every now and again if his gauge starts depleting fast) or something with SEN (though i can't remember how effective they are in this) so you're still building his stagger gauge while healing. recast the debuffs/buffs if they wear off. if he's poisoned you don't really even have to worry about attacking at this point. kinda cheap but it works.

go all-out offensive with RAVs pre-stagger when you can because if you wait too long he'll use Merciless Judgment and reset his gauge.

if it's the last-last boss OTOH, which i doubt, then umm...smack him around? he's easy peasy

am i the only one who almost feels compelled to use the main character in RPGs even if you're not required to? i can't be right. plus Lightning's pretty kewl as far as FF mains go.

i've thought of doing another playthrough one of these days and replacing her with Snow though, the one character who's been neglected both my times through, once i realized Fang's Sentinel + Saboteur combo seemed to make him obsolete.

well Vanille is an important character no doubt. that's different from main though.

and she doesn't really seem too...main character-ish, to put it badly. in terms of personality i mean.