User blog comment:WonderfulAsia/Hetalia English Dub Cast Updates/@comment-2004850-20100715115629

@Yao - Canon is basically another word for official or genuine. For example, we could also say that Austria and Hungary were a couple and married at one point. But we can't say Britain (I'm trying~) and Spain or Britain and America are a couple is canon; they aren't official. Canon also applies to events and names; canonically, we can definitely say Britain raised America. We cannot say France and Britain were like a tag-team that raised America, Hong Kong, and Canada together.

I also should note that head-canon and fanon are pretty much the same thing.

@Haru - I'm happy with the rewrites, too. The best English dubs are accessible to the target audience and get the point across. Considering Hetalia's nature, what they've done is really good. And, yeah, TV-MA rating gives them a lot of room.