Who do you find the most interesting? Personally, I think May is, because she grew a lot more than other characters, like getting over her fear of bugs and went from mixing up attack names, to improvising due to Harley's interference. She also had the best rivals of all female protagonists, like Harley and his sassy attitude towards her. For me the least interesting female protagonist is Iris, because she didn't really develop so much, as had stuff happen to her. Like when all of her Pokémon disobeyed her (excluding Axew) she didn't really change at all when they decided to start listening. The Second least interesting for me is Dawn, because by the halfway point of DP, she went from girly water-type lover, willing to try Gym matches, to Piplup's handmaid. Really, there's nothing to her but Piplup and Contests after a while.