Board Thread:Speculation House/@comment-4047010-20160206215454/@comment-129.31.73.74-20160209224443

While there isn't much, if any, evidence that Yang is a half breed there is A possibilty (even if it is unlikely) that Grimm-Human hybrids do exist.

What if a hybridization COULD happen under cirumstances only satisfied by a massive Grimm invasion.

If such circumstances are rare enough then it we could explain why half breeds where never noticed before :

-There were few invasions on the scale of that shown in the series (especially if as in our world technology allowed for a recent massive increase in population)

-Those were a long time ago, general destruction would reduce records of such an event and its aftermath (the hybrids)

-Hybrids still get attacked by other grimm so mostly died before being able to escape

-Hybrids not having children either because they can't have children that are also hybrids OR because of the psycological impact of having a grimm part.

-finally after one or two generations, if the hybridification heredetary, it would be "diluted" and leave few particularly noticeable traces