Grace

Young Grace had always been the one to keep to herself mainly when she was at her private school, unless she was out on the field playing a game of Football (or Soccer if you live outside of Galar).  To her classmates, Grace was a phenom who many believed would continue to work her way to become a professional Football Player.  However, Grace's true goal was actually to become a Pokémon Trainer, something not often chosen for students at her school.  As a trainer, she would work with her Pokémon to become a player in the Pokémon FIFA League, a challenge that combines Pokémon and their trainers in short Football matches.  On the day her journey begins, she meets another young trainer who was visiting the region from Kanto named "David" and his Pikachu.  After a slight mishap occurred at Professor Mongolia's lab, Grace is given her first Pokémon, which actually was a female Eevee that she was loaned to help with the trouble.  After this event, she agreed to travel with David on their journey, soon joined by his other friends, Raven and Randy.  Meeting these people would help Grace feel more comfortable and be herself without being judged.

As an athlete, Grace is in very good shape despite her young physique, able to keep up easily with even David and Raven.  Her ball control and shooting skills are well trained, she can easily keep a hold of the ball with her feet.  She begins passing this skill onto her Pokémon for her matches.  One of her best abilities is being able to perform the bicycle kick to score a goal, but she doesn't do it often due to how dangerous it could be.  Because she is more of a football player, she's not really good at Pokémon battles, but she would practice with David and the others as a way to help bond with her Pokémon, as well as to help David when he has an upcoming Gym match.  Being from Galar, she knows a lot of the culture and events that occur in this region, and anything she doesn't know she can learn from her Dark Green Rotom Phone (who speaks with a young female voice).

Being a new Pokémon Trainer, Grace has a lot to learn, and making mistakes often makes her feel bad.  It wouldn't take much to bring her mood down, especially with harsh words and nonconstructive criticism.  Fortunately, she has several friends who are ready to help her feel better.  Her Pokémon would also be present to help her mood whenever she feels down.  Despite being an athlete, she's also not super competitive, which can play against her whenever she is facing other trainers in matches, though she does counter this by staying focused and calm.  Because she kept to herself mostly in school, she lacks some self confidence to really speak with strangers she just met, but as she continues to travel, she improves her social interaction skills.

Like many other heroes, Grace is against anyone misusing Pokémon, like Team Rocket.  She views Pokémon as friends and doesn't want anything bad to happen.  She also dislikes seeing her Pokémon hurt badly and being unable to help them out.

*more info to come