So lots of people have Lots, and I mean LOTS of OC's so here we go.
Name: Rose
Gender: Female
Age: 15
Pokéhuman
Pokémon part: Litten
Looks:

Personality: Aggressive to people she doesn't know, but is nice and caring to people she's comfortable with. If she sees someone that she thinks is ok, she will be like a cat.
Backstory: Had a trainer in the Alolan region but the trainer died from a Team Skull Grunt accidentally sending a building on fire. She got on a boat and ended up here. She saw what looked like another cat Pokémon and stayed with that. It was a Persian, or known as Scarlet's Persian, and Scarlet made her into a Pokéhuman. She escaped.
Other: She doesn't really talk.