----ONE OF THE MOST FAMOUS JRPG's----
Final Fantasy VIII (Just guesses)
Squall - INTJ
Seifer - ESTP
Rinoa - ENFP
Quistis - INFJ
Selphie - ESFP?
Zell - ENFJ?
Irvine - ENTP?
It must be close to a decade since I played this so I may be well off...
Squall: INFJ - A lot of the arguments I see for INTJ over INFJ center on his tendency to isolate himself, but this was a result of a his emotionally traumatic childhood. And it was a protective, brooding kind of isolation, rather than an independant, emotionally indifferent one, and I'd associate that with F more than T.
Also, he was constantly analysing how his actions would be viewed by others, infact I don't remember him thinking about much besides people and relationships. And he was such a reluctant leader, seeking consensus when making a decision, as opposed to a comprehensively strategic plan (that may have been partly a game mechanic, but it didn't seem uncharacteristic).
Rinoa: I agree, probably ENFP.
Quistis: INFJ, maybe ENFJ.
Zell: I'd say he was ESFP, or possibly ENFP.
Selphie: Yeah, ESFP.
Irvine: I'm unsure about him, I've thought ESFP, ESTP, ENTP, ISFP... Don't think I'll crack him.
Seifer's another confusing one.
I might consider the other FF characters / games later.