Dear Character Who Just Sort of Showed Up Yesterday And No One Knows Why,
Ummm, hi! Don’t know who you are, but you sure look useful.
How about we have a little chat? Coffee maybe? Get to know each other better.
What? Oh, sure. I can just let the story unfold and see what you do instead. That would work, too. Make yourself at home. Have the run of the place.
For now.
Me