I know. I'm a terrible person for this.
Potential character:
Name: Sora Tranquility Crystal Mary Susan Hikari Tsukino
Age: 16
Appearance: Long, dark purple tresses that reach halfway down her back; eyes the color of rubies; tall, thin body; milk-white, perfect skin; well-endowed chest. Usually wears a very short, black miniskirt; a black band t-shirt; spiked bracelets; military boots; and a strange amulet around her neck. There's also a strange birthmark on her arm that looks like a crescent moon. She is, naturally, extraordinarily beautiful.
Personality: Brave and courageous, Sora is the kindest person you'll ever meet (even though she is incredibly goth). No, seriously. She will stop by the side of the road and help Pokemon that were injured by attempted natural selection. She's just that pure-hearted.
History: Born when a comet passed over Earth, Sora grew up pretty much on her own because both her parents died in a mysterious accident and the aunt she went to live with never really liked her. After years and years of doing chores for this woman (and being denied to go and obtain her trainer's license at 10 -- not that she would have anyway, what with her desire to stay at home and prepare for being a trainer at a special Pokemon school in town, and who would honestly trust a ten-year-old to be out in the world on their own anyway?), Sora finally decided to get her trainer's license on her sixteenth birthday. Unfortunately, she also overslept that day and came running to the house of the local professor, Professor Pine. Unfortunately, Pine informed her that he was all out of the traditional starters, so instead, he gave her a special Poke Ball containing a very special Pokemon: shiny Eevee.
So, Sora began her journey, skipping down the route outside of town until she heard a distressed cry nearby. Going to investigate, she found an injured Mew lying in the grass. Unable to resist the temptation to help it, she picked it up and immediately ran to the nearest Pokemon Center. Naturally, Nurse Joy was not at all surprised by this Pokemon (even though it's a legendary), and Sora got to keep it after it was healed. Hence, the beginning of her trainer's journey.
Eventually, she learns that she's actually part of a prophecy where she uses the magical, mysterious amulet given to her by her parents to harness the power of the legendaries, gain special psychic abilities, and save the world from destruction at the hands of the evil Team Helicopter.
Team: Shiny Eevee/Espeon (nicknamed Neko, female), Mew (nicknamed Hoshi, female), Blastoise (Nami, female), Charizard (Ryu, male), Umbreon (Kuroi, male), Pikachu (Nezu, female), numbers of others with Professor Pine.
Other Things To Know: She's a powerful psychic and has amazing fighting abilities. Also, she has an incredible singing voice.
And that, folks, is why you never ask for characters in this fandom. I speak from experience.
Edit: No, seriously. It's very unfortunate that it happens like that, but that's basically what you get.
Other than that, I'll just have to second what's already been said. My advice is try writing down whatever comes into your head on a blank sheet of paper. Listen to music. Take a walk. Inspiration will come to you after awhile. You just have to be patient and actively look for it.
Or you can take the above and run with it. It'd be hilarious if someone did.