For Male Character
Ash Ketchum. He is the first person who always comes to mind when thinking of Pokemon. He is such an iconic person who carried the franchise to the fame which it had gathered. And personally for me, I remember watching him when I came back from school, and the show used to air on TV, hence my all Pokemon experience had started due to him. I remember that I used to use lines when sending/switching Pokemon like him while playing the games during the new-new Pokemon experience.
Sadly I hadn't watched any episodes of Pokemon after the end of Sinnoh......
For Female Character
No one comes to the mind, at the moment, because my Pokemon journey was all along seeing Ash Ketchum, hence didn't payed attention to anyone else that much !!
For Pokemon
Giratina-O. I had always enjoyed the Distortion World puzzles, and also feel that it was left very much unexplored in terms of potential. And that sort of puzzles are very much interesting to me.