Nine
Vault. He's in the vault, and that means the World ended.
Nine grabs momentarily the thin gold chain he carries. He mutters "Dead... Must assume they are all dead. Must move on."
He takes another deep breath and stands up. This time he's steady, and manages to walk toward the others. They gathered around a monitor. Nine arrives exactly when a young woman speaks monotonically "A bit over 60 years. We've been here for 60 years."
His eyes open wide. He moves to check the monitor, wondering how she came to that number. It's there, over 20 thousand days. The math is right. Unless the machine has a glitch they have been on ice way too long. He recalls people talking about 5 or 10 years, 20 tops, to reach a safe level of radiation and to go through the nuclear winter. And why the cryo? He heard about it, but the vaults weren't supposed to rely on that, right?
"What is this place? Why are we here? How did we get here?" A young man with unkempt hair asks quietly.
Nine looks at him, puzzled. He's about to speak harshly but remembers how confused he was a few minutes ago. "We are inside a vault, to survive the bombs. It seems that part worked. We came when the sirens began... I believe. At least I did that."
Nine looks around, not waiting for an answer. Another woman is coming back from the door, it seems she took a look but decided not to venture further. Damn, he's clearly the oldest one around, and by a clear margin. He's not the command kind of person, but for the moment he will have to try to organize things. Nine decides to speak to them all.
He clears his throat. "Hum... Well... Look, it seems you're all as confused as I am." Oh, how much he wishes to be better with words! But it's not the right moment to be shy. "You don't know me, and I'm not trying to assume any kind of command here, ok? But I see no immediate danger, and we need more info. I think it's best to go check what's out there." He points at the door, and then to the terminal. "while you try to figure something out of that thing."
There's a very tall man, slightly behind the others. Military, no doubt. Nine can tell just by the way he stands. "Sir, I believe it would be better if we did it in pairs, so no one goes anywhere alone. Would you come with me?"