I encourage anyone who knows differently/ better to correct me if I'm wrong here, but...
Originally Posted by AshxSatoshi
It seems that Serena was written into the series with the sole purpose of wetting the appetites of the sorts of people who like "shipping" (aka not me). This left her as a pretty shallow, one-dimensional, ill thought out character, who obviously needed to be more than just Ash's next squeeze.
They then gave her what was, frankly, a pretty uninteresting goal, which was so similar to Pokemon Contests that it may as well have been Contests anyway, only to turn her into a Coordinator for her exit storyline in the end.
I feel that with better planning she could've been a great character, but unfortunately, for me, she's destined to lie for eternity on the "unmemorable travelling companions" pile with Max, Iris, Cilan, Clemont and Bonnie.
Having traveled through the Kanto (x2), Johto, Hoenn, Sinnoh, Unova and Kalos regions, plus the Orange & Decolore Islands, competing in six regional Pokémon League competitions, winning the Orange League, defeating the Kanto Battle Frontier, seeing/ meeting each of the rare and powerful Legendary/ Mythical Pokémon, some on numerous occasions, and continually fighting vigilantly against six villainous teams, Ash has apparently now decided to go to school.