Natasha turned as he answered so she could pick the antidote up and tucked it into the bag she'd brought it in. She looked back at him with a quick, half smile as she settled the bag over her shoulder. It was clear that she was trying not to laugh. "Not biologically. And don't tell him I said that, he'll be insufferable." He'd probably be insufferable anyway. She wasn't looking forward to seeing Alexei, exactly. But it was a necessity. He was the only person she could think of that had connections with the Red Room. As long as they avoided talking about Ohio or the profound betrayal she'd felt when he let her and Yelena cycle back into the ranks. They were going to end up re-opening a lot of old wounds to bring Dreykov down.

"Alexei Shostakov. The Red Guardian." Her voice took on a hint of amused disbelief as she shared his pseudonym. "He was Dreykov's lapdog. He's been in prison since 97." There was a beat, her eyes focusing on his face as she turned to look at him fully. "Did you ever meet him?" She sincerely doubted that Alexei would have been party to anything to do with the Winter Soldier behind the scenes. He liked boasting too much. But a contest of strength? That he would have absolutely been interested in.