Gardevoir. Now, want my reasons in list or wall of text format? I've easily got over 40.
I'll just do my top 5 then, shall I?
1. Its the Guardian pokemon.
2. Its not very selfish, and puts others needs in frount of its own.
3. Its very brave, And would give up its own life to protect the ones it loves. (I should be saying she... >.>)
4. Its a psychic pokemon, which is my fav type, ghosts second, and she is in the ghost category....
5. Pokemon Mystery dungeon, enough said.
I also like how she looks, I think its the Japanese doll shape that makes me like her for looks, that and the grace, but I'm stating this just so I have something that my human parts like >.>
(FYI, I'm very spiritual, I'm more intune with the afterlife then your local priests >.>)