So, I'm bored, so here's a little attempt at starting a meme.
Take as many of your characters as you like and give them an RPG class that suits them.

Vinderex: Red mage. He's adept with a rapier, and possesses some knowledge of magic too, particularly of the wind and fire elements. Has a couple of low level healing spells too.

Varlan: Warrior, Maybe even Barbarian. He's ALL about dealing insane amounts of damage to any who would dare invoke his wrath. While he does possess some medical knowledge as well, he's more likely to simply rely on adrenaline to keep him slicing and blasting his way through armies of enemies, and then only later dealing with whatever wounds he might rarely have gotten in return.

Zyr: Magic Knight. He'd wear armor and wield a sword, using magic to enhance both himself and the sword, maybe occasionally casting an offensive spell or two.

River: Monk. He'd have a refined, disciplined, and elegant fighting style using a guandao. He'd naturally dance his way around incoming attacks, deflect or sometimes even catch projectiles and magic with his weapon or his bare hands, and would take advantage of things such as pressure points to quickly subdue foes. He'd also possess some healing and water magic.

Rask: Lancer/Dragoon. He'd keep enemies at a distance with his trusty pokeystick. Also, jump attacks!

Saireth: Black Knight. He'd have the immense strength necessary to strongarm a giant buster sword, single handedly swinging it around and smashing through anything in his way with it. And he'd pair it with powerful dark magic.

Zaerilia: Wizard/Sorceress (obviously). Do I even need to explain this one? Nothing pleasures her more than dominating "inferior beings", and ravaging entire lands with otherwordly fire.