How would an interaction between Frank Castle and Uncle Iroh go, do you think?

Huh?

Yeah, no. If Matt Murdock, a man Frank respects for his drive and willpower in fighting the same criminals he does, can't shake Frank's cravings for going on murderous rampages, neither could Iroh.

Would probably go pretty well Iroh is used to making small talk with a guy that’s kind of an angry dickhead.