I'm quite disappointed for not being able to catch Whimsicott. When they first announced X and Y, I was really looking forward to having one of these on my team. Since it's got access to Prankster, an ability that allowed you to strike first when hitting non-damaging attacks, I could've stalled my opponent for bunch of turns with moves like Taunt, Encore, Memento, and Stun Spore. The more you stall your opponent, the more upset they get. And the more upset they become, the higher the chances of them forfeiting. Once they quit, you immediately win the match. How brilliant is that? xD I currently have a Whimsicott in Pokémon Black, ready to be sent to my Y version. Once they launch PokéBank at the end of December this year, I'll have transferred as soon as I can.
Another Pokémon that I really wanted to have is Swampert. Though, I'm afraid I won't be able to get my hands on one unless someone decides to give it to me. d: I do have a Swampert in Pokémon Black 2, but unfortunately, that one is hacked. And according to rumors, hacked Pokémon cannot get through the PokéBank in any way.