Gardevoir: Sleek, gifted with powerful psychokinesis, protective of its trainer... I've loved Gardevoir from the moment I first raised one. One has always been on my team from Sapphire onwards to blitz not only the E4 but also the teams of people I know.
Haunter: I thoroughly blame this on Ash's. I was amused by it in the anime at first, so then I tried my hand at writing them into my fanfics. The end result? Some of the coolest scenes I've ever written.
Furret: It started with a crackplot in an RPG I used to run, but after raising some on Silver and finding that they're actually not so bad, I grew fond of the little fur balls.
Raichu: My original favorite and still a Pokemon I'm very fond of. It's cute, and it packs a nice punch.