Royal Guardians Attack Without Provocation
Royal Guardians will attack upon being 'c'hatted with, even if the PC hasn't stolen anything
So, I'm not sure if this is a bug or intended feature, but I ran into Emil the Royal Guardian on D:2 with my Hurthling Mindcrafter. Emil was peaceful, and I didn't pick up any gold. I went up to him and talked to him and he yelled "Die scoundrel!" (or something similar) and started attacked.
IMO, royal guardians should either attack on sight or remain peaceful until you actually steal something. This behavior seems... odd.