Matthias' first instinct upon being noticed was to shout back at the girl. She obviously disliked him already, and it ticked him off. He was being typecast as cowardly. If only she actually knew him... Instead of yelling back, all Matthias did was pass off the eavesdropping. "I'm just leaning on the wall here. Aren't I allowed to lean on the wall?" Which was true. He was leaning on the wall. Perhaps he didn't reveal his full intent, but that was the point. He knew two things now, though, from the conversation so far: these two didn't like him (so he was a target), and to avoid Jason at close range if he had knives. All Matthias needed to take him out was a ranged weapon like a bow and arrow, or even a booby trap. But the scheming could come later. From the looks of things, he would also have Pax on his side in the Arena. Matthias looked away from Jason and the girl, still defiantly leaning on the wall. No way he was leaving now.