1.Serperior- This Thing is a BEAST, I've loved it every since i laid eyes on its Badass Pre-Evolution Snivy. Ive used Serperior every time i played pokemon BW or BW2 and never even tried playing with Samurott or Emboar (mainly because im tired of Fire/Fighting and Samarott is just weird in my books).
2.Empoleon- This Starter is about the same level of awesomeness as Serperior, It was also my first Pokemon (Yeah i know i only started playing pokemon in Diamond and Pearl, but i watched all the anime). I loved this thing So much I raised up to level 86 with no rare candies, just rechallenging weak pokemon trainers over and over again(Along with my level 76 Dialga, and level 83 Staraptor).
3.Roserade- I loved this Poison and Grass type Flower, and i started loving it even more in BW2 since it came back, along with Poison Point,Venoshock and Toxic (I dont care if If it has Toxic and Poison Point).
4.Cloyster- 5 Words, Skill Link and Icicle Spear
5.Garchomp- Loved it ever since Cynthia used it (To sweep me most of the time). The one thing i did with it... OUTRAGE EVERYTHING, Your confused Garchomp, I DONT CARE OUTRAGGEEEE.
6.Espeon- This Little Pink dog thing was Majestic,(even if it did take me a long time to actually let Eevee evolve into it in HG and SS)