Well, I need a few NPC and monster ideas to work a campaign out of. Summary of the setting: A seemingly immortal Big Bad rules three islands in the middle of nowhere. Since he can't do everything he wants just by threatening to club the entire population, he's set up some administration, headed by shugenja (in 3.X D&D, spontaneous divine casters with elemental focus, for 4th, I'll retool classes like the upcoming primal Shaman class) who perform magic by channeling or commanding elemental spirits. The big bad picks out the talented members of the class to serve directly under him. He likes to have one of each element, but can break the tradition depending on the presence or absence of skilled casters. Anyway, I've got a couple of them conceptualized. Could use some elementals and such to fight alongside them. Campaign level's going to be around 6-10, theme's quasi-Japanese, with some possible shout-outs to Bleach.
Fire-type caster: Head of the island's police, and the Dragon of the campaign. She's generally self-interested and got to her position by skillful backstabbing. Going to be a slightly retooled Invoker (Divine Controller/Artillery class). Regular evil.
Water-type caster: The islands' mad scientist. Essentially invented some drugs to turn test subjects into sahuagin, statistically speaking. Fond of experimental surgery, especially brain surgery. Talented but twisted healer. Adapted Shaman (Primal Leader class) with a large air-swimming fish as his summoned spirit. Chaotic evil, and hated by nearly everyone. Big Bad tolerates him for the sake of his R&D.
Might extend to include metal and wood as other elements. Suggestions for monsters to fight alongside all of these would be appreciated.