Stonedeath is a goblin assassin, but much more than that. His new form allows him to scale walls, fight with uncanny agility, and above all that; he has a hatred for adventurers.
Renik Kavios is the leader of the dockworkers’ union. He is also a smuggler for stolen goods and illegal contraband. Through his power, he has the leaders of a city locked under his control.
From an episode of Justice League Unlimited:
The God of War creates a giant, unstoppable robot (golem, animated armor, etc.) as a weapon for one side in a civil war; his purpose is to prolong the war and create suffering and war among humanity.
Quote from Ares in that episode, which would go well with this idea: "That's all you mortals are good for! To fight and fight and fight until there is nothing left but charred land and blood and bones, and to end it all and then start again with the next generation!"