Well, two down as being American it seems. Victor of course, and Andrea is to be Andrea Margulies (Rubbermaid), a stretch mutant from another X title.

That leaves the tall guy with the ponytail, the girl who may be his sister, purple guy, and the other girl who looks a bit Canadian as possible characters with Canadian and/or AF ties.

Of course, it's never been stated that Rubbermaid or Victor are not Canadians in the comic, but I am guessing that they're not. I'm not sure where Rubbermaid was first seen, anyway.