@Darthskippy A mysterious person in hooded robes without a scythe could easily be a cultist worshipping the devil or Elder gods but I won't deny that "Mr. Death" was my first association too, lol.
"Also how is Oscar able to look at red haired women and be like..."
Clearly he is a very judgemental person, though I am not sure if calling red haired women and people in robes "supernatural" is any better. I can only assume there were other weirdos taking interest in Flora's picture. Oscar already jumped to a conclusion that the owner of a vampire hotel was a vampire so I don't think it's too much of a stretch for him to see a bunch of people in strange clothes taking an interest in a supernatural painting and say they look like witches.
As for Creepy hiding from the spooky policeman, he was hiding from Oscar in some chapters too.