I've noticed one user claiming to be from there but I'm pretty sure he's trolling.
Most Helpful Girl
There used to be an option for North Korea years ago, and on the current list there's a bunch of uninhabited islands you can select as your country. I'm guessing the list comes from a generic list of geographic locations, so that's why Antarctica shows up. There are a few people who live on the research bases there, but likely none of them are on GAG.0
Most Helpful Guy
Highly doubt it. Antarctica appears too cold for human life. The only people over there are scientists and geologists whom are only staying temporarily.1