Boldore. Before BW, I couldn't imagine disliking a Pokémon any worse than I did Graveler. (Golbat's more annoying to deal with, but I can put up with it because at least it turns into something cool.) Then along comes this thing, which is not only even uglier - look at it! - but is in basically every single cave purely because they couldn't use Graveler, and unlike Graveler it's guaranteed to have the newly-buffed fuck-your-flawlessly-bred-perfectly-EVed-m
Dishonorable mentions: The Tympole line. Replace "cave" with "pond" and it's more or less the same situation. They don't have Sturdy, which is nice... just a 50% chance of outspeeding and launching a rain-powered Water move at you before dying in one hit. And they're also uglier, which is obviously the most important detail.
Day 2 - Your least favourite Pokemon
Day 3 - Favorite starter Pokemon
Day 4 - Favorite Eeveelution
Day 5 - Favorite legendary Pokemon
Day 6 - Most terrifying Pokemon
Day 7 - Most adorable Pokemon
Day 8 - Most amusing Pokemon
Day 9 - Favorite Pokemon type
Day 10 - Least favorite Pokemon type
Day 11 - Favorite new Pokemon from Black & White
Day 12 - Favorite Pokemon attack or move
Day 13 - If you lived in the Pokemon world, what would you be?
Day 14 - If you were a gym leader, what would be your specialty?
Day 15 - Favorite region in the Pokemon world
Day 16 - If you could live anywhere in the Pokemon world, where would it be?
Day 17 - If you could be any Pokemon, what would you be?
Day 18 - Favorite Gym Leader
Day 19 - Favorite Elite 4 member/Champion
Day 20 - Favorite Pokemon Professor
Day 21 - Favorite Pokemon bad guys
Day 22 - Favorite Rival
Day 23 - A Pokemon which reminds you of a friend
Day 24 - A Pokemon you’d find useful in real-life
Day 25 - A Pokemon based on your favorite animal
Day 26 - A Pokemon that is your favorite colour
Day 27 - Favorite Pokemon game
Day 28 - What did you nickname your rival?
Day 29 - Favorite Pokemon tune or song
Day 30 - Most nostalgic element of Pokemon