what final fantasy characters are in it?

[Reeno the Alchemist]

i wanna know whos all in it i already know Aurons in but im not sure about anyone els i went through pics and i think wakka,selphie from ff8,mabyzell or siepher(please forgive my spelling)the spell check isnt workin right now

[GunbladeMaster]

i beleive leon is returning and seifer is making an appearance
thats all i know
and i think cloud and sephiroth as well

[TurkSlayer]

What I know is that all of the characters from the last one are in it, as well as, of course, Auron. Other characters that have been talked about are Vincent, Seifer (Who I believe is definately in it), Fujin, Raijin, Garnet (Believed to be the girl in orange hanging out with the BHK) and either Tifa or Rinoa, I forget which.