User blog comment:Phoenixs23/Kaido of the 100 Beast Theory/@comment-72.26.3.89-20130305052921

The actual translation for the kanji 百獣 reads out to "various kind of beast". I'm thinking it might just be a Devil Fruit that allows for transformation into 100 (or more) different animals. He's probably a non-human creature (possibly a lion or bear or something worse and more powerful), who ate a Devil Fruit that allows him to transform into whatever beast he pleases (including a human form). His human form might even resemble the sillouette seen behind Garp when he mentioned the Yonko. Also i doubt a Devil Fruit like that would be overpowered. In the context of a Yonko, and as a compairison to Whitebeard, it's safe to assume such a power would be just as powerful if not less so. Remember that one of the Yonko are almost as powerful as the World Government and the Shichibukai combined. Your idea of him as a scientist actually makes some sense. Considering the cyborgs and all. Just my two cents.