Quoted By:
>Sugimori: “First of all, we started out with Seismitoad, who’s based on the Japanese common toad. I also wanted to make this line of frog Pokemon feel a little different, since we’d already made a series of Pokemon based on frogs — like the Poliwag line. Though the Poliwag line was a bit of a curve-ball, since it changes into something completely different at the end! (laughs)”
>“This time we went for a more traditional frog-like evolution. As for their head designs, we started with Seismitoad’s, then we worked backward from there to come up with the pre-evolutions. The mouth ended up protruding out a little like this when we worked backwards.”
