I think in Crownfall it states the Baron's alignment as being LG, but in his section in Sognbird, Scion, Saboteur it says LN.
I think ultimately the "Lawful" is the most prominent part of his behavior and actions, but I'm curious as to what it's supposed to be. I'm leaning towards making him LG either way, but I was wondering what everyone else's take is.
