Wizards are characters that can use magic or know how to harness the power of the Krystals. They differ from warriors in that they usually do not enter the battlefield, preferring instead to study dragons, and magic.
Wizards are not specific to any faction or race. Here are the names of a few:
Xenoz, Sacerskulk, Sacerstrike, Vasterlan, Vorlod, Yulmar, Silvengleam, Goldewing, Malfalcator