Serena

Serena is a main character and appears in the Pokemon XY anime and the game counterpart.

Personality
Serena is very kind and polite, but has a rebellious side, shown to her mother early on in the season.

When she first started her journey, Serena was uncertain of which route she wanted to take, as in, wether she wanted to become a full-time trainer, or not. In the end, she became a Pokemon Showcaser.

Owned Pokemon
Pokemon Serena has on hand.
 * Braixen
 * Pancham
 * Sylveon

Headcannons
Have a headcannon for this character? Add it here!

Shinyverse
In this universe, Serena has gotten over her crush on Ash. Instead, she and Clemont date for a few years, but then call off their relationship when they not only find their personalities clashing in important situations, but they had a child on the way, Élise. They still have a strong friendship to this day.

When Élise turned four, Serena decided she needed someone else to help her care and be a father-figure toward her, 24/7 (unlike Clem, who saw her a couple days a week and every other weekend). Serena then came across Miette, her old rival, and after much convincing, apologizing and talking, the Pokemon Performer became Élise's "parent". Miette and Serena eventually got into a love-relationship. They have a daughter, Undine.

Trivia
Vector and information obtained from here:

http://bulbapedia.bulbagarden.net/wiki/Main_Page