Pipotchi
Pipotchi's design is masterfully rendered. It has the exact look and style of a piece of Pokemon official artwork, and perfectly fits with what a starter should look like. Yilx's design is cool, and chameleons are in greater need of representation than goats, but it really doesn't have the appearance of a starter, and I am admittedly bugged that the art style is so different from that of Pokemon official artwork.