I would say Sephiroths outfit in ffVII and Clouds outfit it KH(the cape was a very nice touch). As for a girl, Garnet in FFIX would get my vote,its just plain sexy.
Garnet? Whoa, we really don't need to go there... I think we should keep FFIX out of the mix. I mean, she looks like a 12 year old girl with Tifa's face. I mean, 12! Ugh!
well not only do i like black mages a lot i also like "dark" characters, so - including the obvious - i have listed the characters outfits i like the most:,
FFVII - Sephiroth,
FFIX - Vivi Orunitia,
FFX - LuLu, Auron,
FFX-2 - Paine, Yuna moogle outfit!!!!!!!!!! (yes how much shreiking and excitement do u think coursed through me when i got Yunas moogle outfit! you get to walk around for one mission in a MOOGLE costume! EEEEEEEP!!!! =O.o=