Metal

It depends on what job. There is Aran, a polearm warrior ice-element based job that uses combos to play. Then theres Evan, the dragon master. It is like a mage, except you arent attacking, the dragon is. Every few levels, it will evolve. It can only evolve 10 times. More information will be on Spadow's Blog. Evan : http://spadow.wordpress.com/2009/11/19/kmst-the-evan-class/

Aran : http://spadow.wordpress.com/2009/04/22/kmst-v222-the-aran-race/