Fighter: I'm a war mage who conjures arcane armor and swords, then attacks

Wizard: I'm a mundane alchemist guy who throws bottles of potions for various effects.

Rogue: I'm a shadow-magic user who uses his shadow to sneak around, help me steal things, pick locks and help me perform various feats of acrobatics

Paladin: I'm a guy who uses lost nanotechnology to repair other people on the cellular level while fighting with power armor.

Ranger: I'm a guy with a six-shooter and a steampunk robo-dog.

Psion: I use technology to hack reality

Druid: I am guy who knows demonic magic, and can turn into a demon.

thats all I can come up with now.