Board Thread:Speculation House/@comment-14138255-20141031002615/@comment-25555436-20141122125156

Zolnir wrote: I think it was the NYCC interview a few months ago, when Episode 11 was released 1 week earlier at the live event. Someone asked if there will be a hybrid Grimm-human or humanoid type to appear in the show.

Monty says, maybe you've seen it already.

Still think that it's not possible? If Raven is a Half-Grimm, then it means Monty could have been reffering to Yang, if Raven is her mother. And if she's not, then what's the In-Universe reason for her being literally identical to Yang?

However, I've seen some people theorize that the half-grimm may be Adam. Or perphaps even Blake. Reasons for this vary.