@SheriGR, in the first post @TheSpaark states that the problem is with the Magic Realm. It is supposed to be that only Spellcasters or those seeking to become one can go there, but then again there is the magic portal out in the open in Glimmerbrook. So it doesn't surprise me if a few NPCs like Bob Pankcakes showed up from time to time, but the fact of the matter is they are showing up often, and not just as tourists, but have been seen to do spells and engage in magic duels, etc. Also, their clothing will usually change to something a bit more magical.
I would expect more Sims like Bob Pancakes and Lily Fang to show up in Glimmerbrook, but not the Realm. But it seems reversed to me… I see more NPCs in the Realm than I do in Glimmerbrook! 🤨😞