Zari and Charlie in “Unfinished Business”

Zari

You know, I understand why John is being so colossally stupid, but what's your excuse?

Charlie

I'm dying.

Zari

What?

Charlie

Look, every time I shapeshift, it's like I'm born all over again. But stuck in this body, for the first time in centuries, I'm getting older. But, if John saves Desmond, then he never joins the Legends, and I'm immortal again.

Zari

Let me get this straight. You help John risk a catastrophic rupture to history because you're afraid of aging? Okay. Maybe John succeeds and you go on your immortal merry way. But if he fails, I will personally make sure you spend the rest of your short, dreary, human life in the deepest, darkest prison cell the Bureau has to offer.