At one point or another you'll encounter one of these - if your unfortunate enough, you may enough several...
This is a Thrax
they're the most common enemy you'll face. You face the younger brothers which are slightly smaller and gray in the low levels, they have a weaker power however, don't go shooting one when its older brother is about, they're tougher and more agile, doging your attacks. Depending on the level of a Thrax, their armour changes colour, When they're level 50-54 they can be seen wearing a Black armour.
Lightbenders, One of the most annoying creatures, they tend to ...Bend Light!? XD