Long live the King. Although I stuck Dunsparce up top, the results collected in Japan for the most popular Pokémon out of all 720 where as follows:
Court jester, ie: least popular Pokémon, went to poor Simisear. Results were perhaps unsurprising given the frequency at which Greninja and Pikachu appear in the anime and promotional goods, along with Sylveon. What do you think of the results?!