I have an idea in my mind about the ooze gensai mage, but it is still really rough around the edges, but here goes...
<snip>
Standing only a little above five feet in height with continual sweat soaked skin and smelling strongly of stagnant water, many sum up Jabin Jarek with one word, disgusting. While he is not a bad person at heart, few can see beyond his bloated pasty features to harness the keen intellect trapped underneath a husk of skin which feels as malleable as cooking fat.
However, while his outer features may leave much to be desired, there is nothing wrong with the mage's mind, or his magical abilities. Using his spells and other skills to the best of his ability, thus far Jabin has never let one of his clients down.
<snip>
That is all of the description I have so far, but I think the general jist of how the char looks can be gotten. What I am trying to piece together now is how he would have gotten his magical training, as unless his mentor took him on as a charity case, Jabin wouldn't exactly possess the "student next door" look.
I am really tempted to make him a diviner, but the freedom to have all the schools at my disposal is really nice also.
I know I will be thinking better tomorrow after I drop my son off, so I will stop rambling for now, but I do know whatever race I do go with, I will be making him a mage.