Ever time I see this thread again I wonder if I should make another contribution but have struggled so far to contribute. But then I remembered the Legend of Jaret Arnold.

One of the longest running RP's I've done is Precipice of War which you can find over in the Nation RP section right now under its newest iteration. But back in the good old days on its original forum - the Spore Forums, it's RP board where it was born - there was a dude who played as Canada. Its leader was Jaret or Jared Arnold. There's not a lot to say about him as a character per-say because this was a phase and era where not a lot of thought was put into characters most of the time. But under Jaret Arnold, Canada was a super-power far beyond its usual capabilities. It managed to go to war with the United States twice and win, occupying half the country and taking concessions. It established colonies in Antarctica and sought to build a line and electrical infrastructure from Canada to Antarctica in order to utilize the supposed electricity the colony was able to produce itself through wind turbines or something.

There was some other fun stuff from back then, such as a France ruled by someone simply known as "Monsieur Greene" who was a self-insert of the writer and teleporting Russians.