Queen Lillie: The Professor's live in assistant and Ash's sister figure if they are going to live together with Professor Kukui. She's generally polite and very book smart. I think she'll be a very interesting character with her fear of touching Pokemon stems from tramuatic experiences as a child (probably adults who forced her into fight with/against other Pokemon and she only felt the wrath of them but knew deep down that Pokemon weren't bad creatures). I do think that she can't touch Pokemon because she just can't bear to touch them with her human hands due to her physically hurting some Pokemon in the past and refuses for innocent Pokemon to touch such tainted flesh. She'll admire Prof Kukui and has a loving relationship with Mao chan. She will bond with Ash and might be a bit hesistent with him at first due to his hyperactive nature but she respects him and they will both change by each others' differences. She has a good relationship with Lady Lana and she'll stick to only hanging out with the girls and is mostly seen on the sidelines. She rather watch people have fun than to participate.
Mao chan: Mao will be Ash's best friend. She's a scatterbrain who knows her way around yet doesn't have a good sense of direction. She gets herself and her friends into trouble occasionally and her Bounsweet has a somewhat different personality than her. She has a lot of confidence in Ash and bonds well with him from first sight. She's a good chef and despite her cooking being generally edible, she sometimes is creative with her spices that isn't well... favored. She's a capable battler and gets along well with everyone. Mao will have a loving relationship with Lillie even if she doesn't pay attention in class all the time and finds herself trapped in her daydreams. They may annoy each other sometimes. Her relationship with Lana is a bit competitive and practice battle sometimes. They're friendly rivals in the sense of seeing who'll beat the other in battle with their oppossing type difference but they're mainly friends first, rivals second.. or third.
Lady Lana: Lana is a calm, demure girl who is always the first to take action. She is the big sister of the group and is sometimes late to class due to her taking care of her little sisters while her father is away on a fisherman boat. She's a skilled water specialist in terms of battling and water esque activities. She's happy when things are quiet but when a Water Type Pokemon appears, she's ready to gush over it. She'll see Ash as another "sister like hers" and may have some unpleasant thoughts about him at first but learns to appreciate his traits and to not judge him based on how he presents himself. She has a good relationship with the girls and is the mediator when one of them are mad at the other or misunderstands the other. She can sense tension/trouble by a mile away.
Kiawe: Ash's rival. When they make eye contact, they are destined rivals in battle. He seems annoyed with not just Ash but everyone's antics aside from possibly Lillie being the only sane one. He has a low tolerance for nonsense and has a hot headed altitude. He's a skilled, competent battler. He's impressed by Ash's competence and deems him a formidable rival. He's good at dancing and in his free time, he's seen working on his dance stances for Z moves. Despite being annoyed/irritated with everyone's stupid antics, he does care about them and would protect them at all costs if they're in trouble.
Mamane: The inventor of the class. He has a high opinion of himself and loves Electric Type Pokemon. He likes to believe he's skilled in all things but he always makes himself look like a fool when proving to people he can do said thing. His Togedemaru is very hyper and both of them get excited when they see another small mouse Electric Type Pokemon. He seems to be kind of annoying but he does have bright ideas up his sleeve. He also prefers staying indoors and working on his inventions unlike the muscular outdoorsy Kiawe. He's in second place in terms of the highest grades in class. He's a decent battler and tries to impress the girls.
Ash: The new guy of the class. He's excited over everything at first but as he gets used to his new home, he settled down nicely. He's a competent battler who aims to up his skills. He's a goof who compliments Mao chan well in terms of person and always sees the good in people. He tries to compete all different types of activities and is respected by his classmates. He butt heads with Kiawe and Mamane at times. He isn't the best studyer and would rather spend his time hitting the beach instead of studying but with the help of Lillie who helps him understand the work, he'll get decent grades. Prof Kukui is his father figure who keeps him in check and disciplines him when it's needed though he's generally a laidback guy.
Pikachu: Ash's Pikachu is Ash's closest partner and has a supposed rival that won't leave him alone. Pikachu is usually content with whatever Ash does but he won't agree with him on everything. He's a confident, top notch battler and syncronizes well with Ash.
Prof Kukui: A chill, laidback guy who's taking care of Ash as he's in school. Also has Lillie as his live in assistant. He keeps a close eye on both of them. He can be serious and quite the opposite of his normal demeanor when it's necessary. He owns an Alolan formed Exeggutor who acts as his class disciplinarian and right hand man. He's a knowledgable professor and trained battler. Prof Kukui keeps certain things to himself or to only trusted adults.
Principal Samson Oak: He's the principal of the school that Ash and his classmates goes to and has a stale sense of humor. He's friendly and isn't afraid to show his strange quirks. He's also Prof Oak's cousin and has Ash enrolled at no haste. He keeps in touch with Ash's mother and his cousin, updating them on his grades and well being alongside Prof Kukui. He knows a lot about Pokemon and is a genius despite not showing it.