Yeah, Matty would call him Al a lot in return. Makes sense. Canada calls them Mr. England and Mr. France, but he loves and respects them both, so yeah. He would neverrrrr call England Arthur to his face unless he was given permission.

Probs serious discussions? Or arguments.

Oh god yes, please do we will do it somehow. Especially because they need to become uneasy friends eventually to fight the aliens they can argue over their names for the sake of arguing. o9