(hahaha, guess who completely forgot this existed? Yep, it's me. I don't care if nobody cares, it's the principle of the thing. So here, have too many headcanons to count. As a note, of I write Rome, I mean the capital.)
-Romano and 2p! Romano spend all their time arguing with each other about each other's clothing taste when forced to interact, as both believe the other has next to no fashion sense. Despite this, both would rather spend time with each other than their brother's alter.
-Toronto is a ghost now and interacts with the living through Ottawa's Ouija board.
-Ottawa, Egypt, America, London, Prussia, Tokyo and Athens are insomniac buddies. Rome, DC and Canada set alarms to wake themselves up in the middle of the night just so they can tell them to go to bed.
-Rome is the Dad Friend™.
-America can't roll his R's.
-Ottawa has the worst social anxiety of anyone ever.
-Ontario hates social media with a passion.
-Ontario and PEI are not affected by poison ivy.
-Ottawa is convinced that Japan wrote the Hetalia series.
-Ontario has a vegetable garden in the back.
-Canada and Ontario inherited a love for plants and gardening from Britain.
-Canada's curl represents the northern islands of Canada.
-Quebec uses bobby pins to keep his hair back.
-Ottawa has a terrible memory.
-Ontario has the same facial structure, skin tone and body type as Canada.
-Ontario needs glasses but only wears them inside the house and otherwise wears contact lenses.
-Ottawa's hair, when loose, reaches down to her knees.