User blog comment:AwesomeSauce360/What Do YOU Think Roach's Nationality Is?/@comment-69.171.166.112-20120105002836

I'm an anon, but I'll say what I think anyway...

Roach is most likely British because the main commanders of TF141 are British, always has the Union Jack if you noclip, his name, "Gary Sanderson, which is British, which means... If you think about it, the British Empire (of course) carried their names with them to North America and Austraila. But I think he's British.