I recognized my antagonist right away; I didn’t know who he was, but I recognized him. Or her. Too early to tell.
He walked in out of the night into the bar, wearing a long woolen winter coat. The locals thought this was cold weather, and to fit in, people like my antagonist and I dressed the part. I sat at the far end of the bar, right near the corner, with a view toward the door for reasons exactly like this. Although, in decades of doing this job, I’ve never once run into my counterpart. Or anyone from the other side, for that matter. But when my antagonist walked in, I knew right away who he was. We can always recognize each other, no matter how good the disguise. If the humans were paying attention, they might have noticed the telltale signs, but they rarely noticed people like us.