That right there, the blasé, weirdly detached demeanor this guy has, how wrong he seems after having just done something that would have outright killed Wolfwood if he'd still had a life to lose, was the first time in a long, long time that he'd suddenly remembered what it felt like to be afraid of Vash. To remember that he wasn't human, that he was powerful, and if he weren't such a good person, if he didn't keep such a tight control over his powers, he could be unfathomably dangerous.

He's not even alive, and he's terrified of the guy.

It doesn't help that there doesn't seem to be any recognition in his eyes whatsoever. He knew Zazie, he knew Knives, but he doesn't recognize Wolfwood? Was he from a world where they never met? Was he from a reality where he had gone along with Knives' awful plans? The thought of a Vash that had been just as murder-happy as his brother felt so wrong.

He needed to warn the others. At least this time, he knew for a fact that this was Vash, and wasn't making a massive misidentification.

...And yet that thought, remembering how he had read Tessla so wrong, and that she was apparently doing better, now, made him pause when he had been ready to dematerialize and run back to Rem's home.

"'S just me, Needle-noggin." He kept his voice as nonchalant as he could. "Still Wolfwood, just...less livin' than you last saw me, that's all." Play dumb, get him talking, figure out what the Hell is up with this guy and then go from there. It wasn't like he could do him any actual harm, anyway. If anyone were going to fuck around and find out, he was the best one for it. "Turns out dyin' doesn't really mean everything just stops, so that's good, right?"