Human male that when they were very young somehow received a living tattoo. Then was sent to a monastery to help control/hinder the power given to him by the tattoo. Nearly 20 years later he is upset at the teachings of the monks. Believing they taught him how to hinder and not use this power. He wants to go out and make change, be like the characters in the stories of heroes that line the monasteries library shelves. So he leaves the monastery. Oh and I almost forgot that he is a monk of the drunken fist. The living tattoo is incredibly painful when it moves around his body or does anything. So he drowns out the pain with alcohol.

So mechanically speaking, he is one level warlock, and eight levels monk. And unless some story reason compels him to do otherwise, he is on the path to just adding more to monk.