User blog comment:Ajrep1994/Yang and Ruby are half sisters/@comment-11188061-20140724002358/@comment-11188061-20140724033923

That's about right, yeah. There was the rumors that one of them are adopted (which is a very good possibility actually), but Monty confirms that they are blood related. Then there's the fact that their surnames (or even the style) are not the same, so it's only natural to assume that they're half sisters. It'll be more surprising if they're not - sure, there are siblings who look completely different from each other, but Ruby and Yang are physically different in too many ways - hair color, eye color, size, height etc - to have the same parents. Today, we have confirmation.

So our heroines might a womanizer daddy (don't jump too quickly to conclusions, we aren't 100% sure that it's the two mummies and not two daddies - though I guess the latter will cause some... complications). Not too surprising, and hell, he might even be a hero. Probably.