I caught a Purrloin early in the game but it was really bad - it didn't learn any good moves leveling up, horrible stats, was just bad in general. It could have been and looked really good too. :/
For some odd reason I kept with it during the black storyline and it held up my team, instead of training the others I would be using the trainers to level up Purrloin and still it was really bad D:
Zebstrika was really disappointing too, it was also frail and has a bad movepool. :/
Also Pidove's line. They could have given it a better movepool too, it didn't really get much of a choice with attacks.