“They can’t help us, Kal.”
“Yes, they can. And they will. It’s a... a part of them. How they are.”
Star Trek: Discovery 3.02 Far From Home
It takes a long look at the idea of legacy, and how to deal with the expectations of those who’ve heard of you. See also Captain America, and obviously King Arthur and assorted other legendary heroes who will return in various places’ hours of greatest need.
How would your PCs deal with that?