Bucky was used to getting all kinds of weird nicknames, so he didn't think anything of it. The masked man still wasn't standing down, but he wasn't especially concerned. At that distance, he could definitely land a fatal head shot, but Bucky had long since accepted the possibility of his number being unexpectedly up.
"You're probably not where you think you are. I'm not gonna stop you, but that elevator you just came out of is some kind of messed up time portal. Whatever you were just about to do is more than likely no longer possible. I'm just here to offer a helping hand. But hey, feel free to go off on your own." He took a drag of his cigarette, flicking the ashes with his gloved hand.