Tagos is a bandit who can be found at the Bandit Camp.
You must climb to sets of ladders to reach the Tagos located on the bridge/catwalk.
He provides the side quest An Axe to Find. You can give the axe back to the bandit, or tell him you are going to keep it (in this case, you'll have to fight for it; you won't kill the bandit, though, as he gives up when he feels defeated).
Mind read Edit
Mind-reading him will give you an extra stat point.