Well consider me jealous at ya gettin' to meet Casp or Blocks. No, I've not met anybody. Busta could mailbox bomb me and end my misery if he wanted to though. That's probably the closest other than Nuka and Kiyo I think, Ender and Psyche. They know the general region I'm in.
I think I said it before. If I could still travel there's a bunch I wouldn't mind meeting.