Dusk's Edge and Dawn's Edge: The two mythical swords of Draconia, representing darkness and light, respectively. The two who wield these mythical swords can perform a fusion dance to become someone entirely different. I'd have created such a character, but I'm unable to do to limitations
Caitlin and Jennifer = unknown. If anyone wants to give their fusion a name, feel free to do so.
Isabelle was left as she was by default - yes, she's a default character in RPG Maker VX Ace Lite.
Multiple characters have the same classes, right?
WRONG. They have the same classes in terms of name, but their equipment and skillset is entirely different.