Gabriel had, for just a small moment, an unusual clueless expression to his face. He had not met up with Sas and Jimmy, in fact, as he was coming from their opposite direction. And so he had no idea what Jack meant by a 'heat sink loose in the building'. It didn't take him all that long to figure it out. "Oh, you brought a friend here? With an ability?" 'Friend' could mean so many different things around Gabriel Gray. Regardless, it shouldn't be too hard to find the one person out of two that didn't belong here. He nodded at Jack. He'd get on that.

Or, he would after he flicked at Jack's ear with telekinesis (without moving a finger- so maybe he was showing off a little). "Don't even joke," he said, rolling his eyes. Truth be told, Jack was one of the very few who could easily get away with a joke like that. It'd taken Gabriel a few missions and some time around the guy to stop fearing that Jack would 'trade up', so to speak.

"Nice to meet you, Sylar. I want to talk to you later, okay? Compare notes." He smirked slightly and then headed back out into the hall. It left Sylar looking somewhere in between worried and confused. It was not a look he wanted to have on his face.

"You really don't care that I've killed people?" was the question he ended up asking, after watching Gabriel leave.