Out of all the Nations, Arthur is the wealthiest - a combination of the relationship he had with his monarchy, his years as a pirate, and being really good with investments.
Arthur is a knight, both ceremonially and literally. (Alfred finds this awesome and also incredibly sexy, but refuses to admit it.)
Arthur is an amazing gardener, and pretty much grows everything he needs. Unfortunately, no matter how fresh and healthy his vegetables are, they lose all nutritional value once he tries to cook them.
When Alfred comes over, he sneakily batch cooks a few different meals so Arthur can enjoy home cooking under the guise of YOU HAVE NO FOOD AND I'M STARVING, ENGLAND. Arthur's figured Alfred out, but always plays along.
Arthur's an ass man; he has a mental ranking for all the Nations, and refers to them in his notes by that number. You can guess who number 1 is, I bet. (France was initially furious at finding out his own ranking, but conceded that what truly made him special was not his derriere, but what was on the other side.)
His canines are very prominent, and it can be quite disconcerting when he grins or shows his teeth. Antonio calls him the English Devil behind his back, while Gilbert sometimes calls him Count Kirkland (to his face).
Big feet 😏
Banned from like, ten bars in London for brawling. The last bar he got banned from was because some guy tried to hit on Alfred while he was trying to drag Arthur home.
Despite having no canonical birthday, many fans gave regarded today as his birthday! Today is St. George's day and many perceive it to be England's national holiday.
Snipped from a two years old wip based on the song Superhero by Guiano i never finished(made it back on September 2022 OOOF), today i randomly felt like sharing it with you guys(btw the drawings have more sense if you know the lyrics)