He's heard the word before, but it had been leveled at him by techs who fully expected him to not respond. And he hadn't. Because responding just got him hit or zapped or wiped again. He knows there was at least one tech whose favorite nickname for him was zombie, but he can't actually remember his face.

He frowns, looks down at the deck. "Living dead," he repeats. "What does that mean. Exactly." Because he's pretty sure it doesn't actually mean him, in this situation.