If this is still open I have this:
Name: Roger
Gender: Male
Age (10-16): 16
Sexuality: Questioning (actually gay)
Hometown: Celadon City
Appearance (Eye Color/Hair Color and Style/Skin Color/Other Noticeable Markings or Piercings/Body Build/Height and Weight/Clothes): Brunette with dark brown eyes. He's a bit mousy-looking and pale, often wearing long-sleeved shirts to stave off the cold. When going out he also dons a paperboy hat and a old-worn coat. Short and a bit underweight.
Personality: Quiet and alert. A bit socially awkward. He's attentive to details and often flies under the radar due to being extremely average at first glance. Nevertheless, he can't stand injustice and is a bleeding heart, often taking in Pokémon from Lavender Town's Volunteer Pokémon House.
Occupation (if any): Was often hired by the casino to fix their slot machines when they broke down, due to his skills with machines and gears. Also volunteered at the Lavender Volunteer Pokémon House when he had the time.
Like(s): Machinery (it's simple and logical), old-timey music, nature
Dislike(s): Displays of wealth, cruelty, being helpless
Fear(s): Being betrayed, accidentally hurting someone he cares about, freezing to death, germs
Goal(s): Make a change in someone else's life, no matter how small
Crush(es): Had a childhood crush on Eusine (who would probably be a kid his age at this point in time??) before he went off to find Suicune, but doesn't acknowledge it as a crush, currently has a crush on a volunteer at the Pokémon House named Toby (if that's alright)
Battle Style (How do they command their Pokemon and what do they want their Pokemon to do? Do they start to utilize specific commands instead of telling them what move to use vanilla style? Or do they just yell out commands vanilla style?): Pretty simple moves, he usually trusts his Pokémon to decide if his commands need to be elaborated on.
Starter Pokemon: Shellder, Vulpix, Sandshrew, Oddish
Final Team: Vileplume, Sandslash, Beedrill, Vulpix, Shellder, Magikarp
Brief History: Born in a lower-class family living in the condominiums of Celadon, Roger often had to live on little and work hard to get by. Even so, he was raised by kind and loving parents, and as an only child was the light of their lives. As he grew older he found himself fiddling with things such as radios on his downtime, keeping multiples of them in his room so he could both listen to music and inspect the inner workings at the same time. Because of his reclusive behavior, however, he's not used to interacting with others that much. With the rise of Team Rocket his family is a bit worried about him working at the casino, but since it's only a part-time job and he doesn't have to interact with customers (merely fix machines) they haven't stopped him.
Pokemon Bio
Species: Sandshrew
Nickname: Pants
Gender: Male
Level: 15?
Personality: Timid, often hides his face in his paws and curls into a ball when frightened
Like(s): Pecha berries, big rocks (to hide under)
Dislike(s): Getting wet
Fear(s): Women wearing high heels (see history)
Crushes:
Battle Style (What moves do they mostly use and how do they fight?): Sand Attack, Scratch, Dig, a jack-of-all-trades who can support and attack
Brief History: Was at the Pokémon House at Lavender Town when Roger agreed to take him home. Was Roger's first Pokémon. Has trauma due to his previous owner, a rich woman, abandoning him in search of a cuter Pokémon. Now finds comfort and safety with Roger, and is very loyal to him.
Species: Shellder
Nickname: Drag
Gender: Male
Level: 20?
Personality: Sassy, a bit childish and petulant but becomes more mature when he evolves
Like(s): Rawst berries, whirlpools and fun activities
Dislike(s): Soap and very young kids
Fear(s): Being knocked out
Crushes:
Battle Style (What moves do they mostly use and how do they fight?): Water Gun, Clamp, Supersonic, eventually Ice Beam, serves as a solid and persistent attacker
Brief History: Was also at the Pokémon House and was Roger's second Pokémon he took in. Was from a very large family who decided they couldn't take care of him after their fifth kid was born. Was a bit of a rascal to the other Pokémon, but Roger thought he'd do well with all the water in Celadon.
Species: Vulpix
Nickname: Ashy
Gender: Female
Level: 20?
Personality: Lonely, independent but with an underlying sadness to her
Like(s): Cheri berries, small pebbles to play with and bouncy balls
Dislike(s): Getting wet, bad smells, metal sounds
Fear(s): Small spaces (see history)
Crushes:
Battle Style (What moves do they mostly use and how do they fight?): Ember, Confuse Ray, Swift, Tail Whip, dislikes fighting in general but if she must she is mostly a status debuffer and rarely uses attack moves
Brief History: Was found stuck in a trash can in Saffron and taken to the Pokémon House where she was adopted by Roger. Not much is known about where she came from but it seems she has trouble with seeing out of one eye.
Species: Oddish
Nickname: Squishy
Gender: Male
Level: 10?
Personality: Naive, often clumsy and innocent behavior
Like(s): Oran berries, dandelions and meeting other Pokémon
Dislike(s): Being frightened or attacked
Fear(s): Being left alone
Crushes:
Battle Style (What moves do they mostly use and how do they fight?): Absorb, Toxic, Stun Spore, eventually SolarBeam, obedient and follows orders to a T, too young to start elaborating on orders
Brief History: Was adopted by Roger from Erika, who had just had an egg hatch in her care. While she didn't know him personally, she knew he was a good person by the way his Pokémon acted and entrusted him with the baby Oddish.
Species: Kakuna (Beedrill)
Nickname: Grump
Gender: Male
Level: 25?
Personality: Rash, impatient and easily agitated
Like(s): Chesto berries, large open spaces and battling
Dislike(s): Bird Pokémon, certain people
Fear(s): Future dangers
Crushes:
Battle Style (What moves do they mostly use and how do they fight?): Harden, (as a Beedrill) Fury Attack, Twineedle, Cut, very aggressive battle style and often elaborates on Roger's commands
Brief History: During the story Roger finds a wounded Kakuna and catches it, as it will not survive without care. When it evolves it remembers everything that has happened to it and is reluctantly loyal to Roger.
Species: Magikarp
Nickname: Spook
Gender: Female
Level: 15?
Personality: Brave, a tough and persistent type
Like(s): Sitrus berries, seeing how high she can jump, protecting others
Dislike(s): Seeing others outperform her
Fear(s): Being too weak to do anything
Crushes:
Battle Style (What moves do they mostly use and how do they fight?): Splash, Tackle, is a lot more creative than trainers give her credit for
Brief History: Was caught by Roger after finding her trapped in an abandoned fishing net. She was thrashing around a lot and wouldn't stop following him after he saved her until he put her in a Pokéball.
Ok I'll change the Suicune thing but apparently Eusine was actually born in Celadon (which I didn't know before doing research for this!). At least according to Bulbapedia.Just to let you know that Suicune doesn't exist and likely Eusine doesn't exist as he lived in Johto, which also doesn't exist. But I like your character :3