Okay, since I was the one who actually wrote the first part of the
fanfiction, I'll tell you my reasons for these character castings.
Ryouga = Sabin
Ranma = Locke
Akane = Celes
Ukyou = Rachel
Mousse = Edgar
Kunou = Cyan
Shampoo = Terra
Kirin = Leo
Okay, Ryouga is not Ranma's brother (duh)  but sabin is strong and so is
Ryouga.  Sabin's Aura blast can be a shishihokodan okay?
Ranma as Locke.  Same reason what Dong gave.  That relationship with
Akane/Celes.
Mousse as Edgar.  Those weapons
Kunou as Cyan.  Cyan has a sword, he talks like Kunou.  So there.
Shampoo as Terra.  When I wrote that fic, I substituted Magic for
Marital arts.  SO it doesn't matter if Shampoo knows magic or not.  She
was the onw who knew martial arts.  Pretty soon, everybody will learn
martial arts (like they did in FF3) with espers.
One of the espers was supposed to be Happosai and Colonge, but I forgot
which ones.
Now, what about GAU?  I don't know.
GOGO is Tsubasa!!! okay??!
I was about to cast Sasuke as Shadow but..
Now, if this was FF2 cross over...
rosa- akane
ranma- uh, that hero (can't remember the name.. you know, the guy who
becomes the paladin)
Ryouga- that other hero
Mousse- cid
Rinrin ranran- porom and parom (whatever)
happosai - Tellah
Genma - Wang
and that's all I could think of.   Anyway, if you want to see the first
part of the Final Fantasy 6 1/2 crossover, too bad cuz I deleted it.  I
posted up a long time ago and one guy mentioned it's the same as Final
Fantasy 3 so why reread the whole story if you know the plot?  So I got
discouraged at this project, lost all hope and deleted it forever.
I have better things to write now, if you guys can find the rare first
part, good.  You guys can finish it, rewrite it, or do whatever you wnat
with it.