All right.....they're pretty rudimentary, but......

FIRST, the Designers!

Guess: Comes in one of 9 forms. Giga, Terra, Omega, Neo, Omni, True, Seraph, Ultima, and finally, Trance.
Giga is a Paladin.
Omni is a Mage (White, Black, Time, and some summons)
True is a Black Belt
Neo is a Ninja/Thief
Omega is a Blue Mage
Ultima is a Bard/Dancer
Seraph looks like an Angel, but he has aspects of a dragoon.
Terra is a gun totin' bad ass.
Trance is only available to those who are observant. While the rest are statues, which you approach one of to free, Trance is a crystal off to the wayside. Trance is a mimic, but has ALL magic available.

Cloud of Midgar: Dunno. Can summon Atma. Can junction to other chars.

Spatvark: Dunno

Final Freak: (If you want to. You may just want a spin off.) Dunno.

Others

Que'Ul
He is a druid. He morphs into various Were critters, the ultimate being "Forest Spirit." He also controls Terrain. To get him, you have to find several friendly critters (Yeah, I really liked FF9) Once you get all of 'em, Que'Ul appears, and joins your party.

Any other ideas?