Quote Originally Posted by TwisT
And if he could turn people into frogs it would be all over. All he would need to do is turn Peins clones in to frogs and then he could just squash them under his boot. Pretty overpowered jutsu.

Also how can a jutsu turn someone in to a frog? That don't even sound right. Closest thing we have seen so far is Henge and then they are still themself and will turn back. I just can't see it from a scientific PoW.
Well, I'm under the impression that being inside that frog's body gave him abilities that he wouldn't have outside of the frog's body. At least, that's what Jiraiya implied.