Well, the regular customers could include some of Harry's old friends from Hogwarts, like Ron and Hermione. They would support Harry's business and enjoy the unique atmosphere. In addition to that, supernatural hunters from the Supernatural world might stop by. They could be looking for information about certain supernatural beings that might be lurking around the bar. And of course, there would be the local supernatural community, such as witches and warlocks who are not directly related to Hogwarts but are interested in the mix of magic and the new - found supernatural elements in the bar.
In this fanfiction, the regular customers would be a diverse bunch. First, there would be the students from nearby magical schools who are curious about the bar run by the famous Harry Potter. Then, there are the shapeshifters who like to change their appearance depending on the mood of the bar. Some of the more powerful wizards who travel the world would also be regulars, as they would see the bar as a place to exchange magical knowledge. And don't forget the ghosts! They might come to the bar to relive some of their past memories associated with drinking and merriment, even though they can't actually consume the drinks.
His old friends from Hogwarts would surely be regulars. Ron and Hermione would be there often. Neville might come to relax after a day of teaching Herbology at Hogwarts. Luna could drop by to share her latest theories about magical creatures while sipping on a strange - looking drink. Hagrid might also be a regular, though he'd need a special - sized chair.
In such a fanfiction, the bar run by Harry Potter could be a hub for supernatural activities. Imagine the decor, filled with Hogwarts - like elements but also things related to the Supernatural world. Harry might serve butterbeer to the wizards and a special blood - like drink (non - real blood, of course) for the vampires. He would have to deal with rivalries between different supernatural groups, and his friends from Hogwarts could drop by to help him out from time to time.
The regular customers could be Naruto's friends from the ninja academy. They would come to the bar to relax and catch up on old times. Also, other ninjas from the Hidden Leaf Village might stop by after a long mission.
Well, first of all, the genin teams would be regulars. They need to stock up on basic ninja equipment. Then, the older ninjas who are retired might visit to relive their younger days by buying things they used to use. And don't forget the wandering ninjas. If Naruto's shop becomes famous enough, they would stop by to buy rare items or get some rest and information at the same time.
Other potion shop owners might visit too. Not as customers in the traditional sense, but more to check out the competition. They might be curious about Harry's unique potions. And then there are the local wizards and witches in the area where the shop is located. They could need potions for daily life, like a potion to make their gardens grow better or a potion to keep their pets healthy.
Hermione would probably be a regular. She'd come to the cafe to study while enjoying a warm cup of Butterbeer latte. She might even bring some books from the Hogwarts library to read there.
His ninja friends like Sasuke, Sakura, and Kakashi would surely be regulars. Sasuke might come to buy things secretly to support Naruto's business. Sakura could be there to get supplies for her medical ninja work if it's a general store. And Kakashi would stop by for a chat and to pick up some new reading material if Naruto sold books.
His old ninja friends like Sasuke, Sakura could be regulars.
Students from Hogwarts could be regulars. They might come during Hogsmeade visits. Also, young wizards and witches starting their careers in Diagon Alley would stop by. And of course, some of the older professors might pop in for a cup of their favorite brew.
Hermione would definitely be a regular. She might come to the bar to relax after a long day of studying ancient spells at the library. Ron would also be there often, enjoying Harry's special butterbeer with extra foam. Hagrid could be another regular, coming in for a large tankard of a strong, warming drink.