So with Mario Kart slowly becoming Super Smash Kart, and Pokémon being one of Nintendo's most recognisable franchises after Zelda and Animal Crossing, it's pretty inevitable that we'll see a Pokémon DLC at some point. So who would you like to include? I'd go with the most recognisable:
>pikachu
(mascot)
>lucario
pretty much a mascot at this point, he's pretty much the definitive Pokeman.
>Munchlax
it was a toss up between jigglypuff and munchlax, but the gen 4 star wins it for me.