Just to put in my own 2 cents on FFVII:
Cloud is MOST DEFINATELY an INFP:
His overall personality in the ORIGINAL game was actually a pretty realistic and not overdone version of INFP personality. Then, for the sake of pandering, Square Enix flanderized him into more of an INFP stereotype. Still, VERY INFP though.
I was never sure wether Zack Fair was ENFP or ESFP. But I actually think ESFP. I could also see how you could view him as ESTP, but I don't see him using much Ti. I do see him using Fi though. I think he's very much a good example of an ESFP charactr, but if someone would like to refute this, I'd be more than glad to hear your take on it and your reasons for disagreeing.
Also, I agree with Tifa being ESFJ. She seems to use Fe more than Si, and seems to DEFINATELY have more of an Fe focus when interacting with all of her companions. In fact, her behaviour in FFVII: AC was VERY Fe focused.
I'm not sure about Aeris, actually. Would anyone care to explain what about her seems to indicate Ni>Fe>Ti>Se in her functioning?
OVerall though, I DEFINATELY belive that Cloud is INFP, I belive Zack Fair is ESFP, and Tifa is very ESFJ. All good examples of their type, actually, if you ask me.