Joining the bandwagon on Pixiv, it's simply drawing a Pokemon trainer of your own (OC).
I'll make a quick profile:
Trainer Name: Denys
Birthday: April 9
Hair Color: Black
Favorite Food: Cakes and Berry Smoothie
Hobbies: Watching Pokemon battles, Strolling, and Imagining things.
Dislikes: Short-changes, Rainy Days
Pokemon Team: Sableye, Claydol, Banette & Spiritomb
When Denys was starting to form her team from nothing, she decided to get a Claydol, she was interested in these big hovering Pokemons which can fire laz0rs in their arms, with only Quickballs as her items and her dear life, Denys went back and forth in the 1st floor of Hoenn Sky Pillar trying her luck to capture a Claydol...
And because I can't make up a good story, she was able to get one LOL.
She has no idea where to get strong Pokemons so after training her first Pokemon, she went back to Sky Pillar to get a Banette and a Sableye, while she acquired Spiritomb at Sinnoh...
PSCS3 and SAI