Is there such a thing? I've run into a few suspicious characters while leveling my warrior the last week or so. We're in an instance, and the person doesn't ever talk, or respond even to questions directed at them, and while that's not particularly uncommon with normal players, it typically makes me start looking for other signs. For instance, I was in ZF and we had a feral cat dps in the group. Any time anyone left or joined the group, MotW went up immediately, they wouldn't loot the key off the executioner, so we couldn't advance. After some people left, we were just sitting there and I mounted. Immediately, the druid mounted and stood next to me. I dismounted, and they did the same immediately. I right-click dispelled MotW, it immediately recast it. All of this while absolutely no responses or chat of any kind. I also just got out of a Strat run with a warlock who, again never responded to direct questions etc., who did most of the same things, and cast only Rain of Fire through the entire instance. Literally, I looked at recount, Shadowbolt was used once, and Hellfire twice.