Well, Cecil'd always be a Knight, first and foremost. A Dark Knight is, well, a Knight weak against the undead and all that jazz. A Paladin is a beefy Knight with white magic.

A Red Mage Cecil, or whatever name they'd use, would, I imagine, be a Knight with both magic.s That's like Kain, minus Jump, plus, what, 15 spells?

Now that I think about it, a Red Mage Cecil (Red Knight?) wouldn't be all that bad, assuming he doesn't get supercharged physically, like the Paladin did.