An assassin of the Sun.
Fight Style Primary: Aggressive
How he became an assassin by contract is not the question that comes to mind when talking about Thanatos. The question that comes to mind is, how did he get caught?
Working in allegiance with the Solarus knights, Thanatos picked up some contracts to assassinate the Prince of Nordae. When things got awry, Thanatos attempted to flee the scene, but was captured, and branded with the mark of the sun on the back of his neck.