Partner Pokemon: Hydrageddion
Reason for joining/Why you like Team Plasma: As Alex stated team Plasma has unpredictable pokemon. If you face other teams you will find them having the same mediocre pokemon again and again. I also agree that N is very interesting: neat background, neat look and just plain cool. I like the shadow Triad and how they pop up a lot at random times too.
Let me try a topic: What do you think would happen if you (the player) didn't beat N and he went on with his plan?
I personally would think that a rebellion against N might pop up when N tries to get them to release the pokemon.