Not all that much! These two might have some renown over in Galar, here they are just two unusual kooks. Cerulean City would probably be the best place to pick up some rumours, but even then, most of what someone would be able to pick up is that they are insanely rich (being able to rent a castle is a bit of a dead giveaway), that they are from a different region and that their hair is seriously weird. Like really, what is up with that. How does that even work?

In other words, most of the word on the street is just people wondering about the hair. Just like we are all doing.