User blog comment:Rhonda the stalker fan!/Another monthly blog-January/@comment-1874924-20120117044334/@comment-1874924-20120120023359

Yes, I got the impression that Alejandro was what the Season 2 Justin was supposed to be but never really became. As for Courtney being allegedly Hispanic (although how many freckled Hispanics do you know?), Noah being (First Nations) Indian, and so on, you basically have to take the creative team's word for it. As far as we can tell from the actual episodes, they're all really just "ambiguously brown", as the TV Tropes site calls it.

Although never expressly stated in the episodes (as far as I can recall), Heather has distinctly Asian features, most notably almond eyes. What we don't know is whether she's fully Asian or half-Asian. In the first season's "video messages from home", Heather's father is obviously Caucasian, but we don't know whether he's her biological father or her stepfather. I'm inclined to believe the former, given Heather's pale skin tone.