Mason sure as hell wasn't an empath (and rather glad of it), so it wasn't his nature to be able to tell what others were feeling. He'd had enough of that shit the time he had to fight Violet, he was just thankful that Brynn had never turned on her powers around him or he would have had to ditch her, emotions was one of the things he, as a rule (unless it was a negative one of course) simply was not good at. However, he wasn't dimwitted, and even someone that was would notice at least slightly that there was something bothering this man, perhaps something involved in the fight, perhaps something that wasn't.
He was spurred out of his thoughts by a quick and hard thud to the ground, though it didn't take him long to get up, so soon they were both up. Then he spoke, and he didn't respond, but his eyes narrowed very slowly, a slight growl leaving him, that sound pretty comparable to an ill tempered dog or the like.
Then yes, a card flew at him and he actually stood there, half curious to what it would feel like if it hit, but it missed. His frown furrowed even deeper at that as he again wondered what the fuck was going on.
"Well, if ya liked that, yer gonna love this." He replied, voice deep and rather gravely, annoyance also heard in his tone as he stepped to one side then actually went to the opposite and closed the distance between them again, aiming a quick right hook at the other's jaw, feeling..quite on edge the closer he got to the blood soaked shirt he was wearing.