Zenos is still not used to people willingly approaching him, much less doing so this casually, and so he bristles instinctually, though the prickle of familiarity (not the kinship and common purpose he feels with the other killers, but a strange sort of comfort, like the way broken-in boots shape to accommodate a foot; he'd felt the same with Silco, at that first terrible party) means it's limited to a slight raising of the hackles and stops shy of outright glacial hostility. He does not immediately recognise Matt, and so gives him a cursory look over (his focus, predictably, on taking the man's measure; does he carry a weapon? How does he stand? Where does his attention seem to be, on the person he's talking to or the room at large? The scar is interesting; how did he earn it?) before replying.

"Quite the show, was it not?" he smiles, thinly, raising the glass in a small salute to the shorter man before draining it and taking another.