I will say Cynthia or Blue (I still don't like this guy) as they have the most variety in their team. --- "I will speak my mind and say what I want and if you don't like it, well too bad!" "And my Pikachu pillow says hi"
Cynthia. Having a varied yet powerful team makes her a unique challenge as opposed to simply using a single Pokemon or two to give you a quick endgame. --- "By the way, if you don't compete professionally and make money from playing games... you are a casual player."-Howatizer