Frionel and Palamecian Emperor is a bit odd. But then again, its still Hero + Villain from a game.
Betting that's the angle they'll take for the most part. I mean, consider how the confirmed characters are Warrior of Light (Closest thing we'll get to an FF1 Hero cause he's Default Slot 1! Also the FF1 Origins FMV and the Logo shows him too, IIRC), Garland (Villain), Kuja (Villain), Zidane (Hero), Squall (Hero), Frionel (Hero, if only slightly more than Maria/Guy), Sephiroth (Villain), and Ultimecia (Villain.)
Wouldn't be surprised if they're going to represent each FF game (Barring 11, I guess?) that way. But eh, again, hard to say; too little info at this point, etc.