A free-spirited and positive trainer who values the bond with Pokémon. He excels at intuitive judgment and loves battling. His main Pokémon is Pikachu (Electric). He is a 14-year-old male.

A trainer who primarily uses Fire-types. He is serious but has a comedic side. He values tradition and training, possessing a strong sense of responsibility. He has a very blunt personality. His main Pokémon is Turtonator (Fire/Dragon). He is a 14-year-old male. He doesn't easily acknowledge outsiders from beyond Alola and is a total doting brother to his much younger sister, Mimo.

A cheerful male student in his early teens with great athletic ability and cooking skills, especially curry. He is energetic, highly curious, and loves Pokémon. He has black hair in the back and red bangs. He is close friends with Liko. His partner Pokémon is Fuecoco (Fire).

A girl in her early teens with dark blue hair, blue eyes, a teal hoodie, and white denim shorts. She is close friends with Roy. She is polite, somewhat timid, but very kind-hearted. Her partner Pokémon is Sprigatito (Grass).

Team Yell: A troublesome group that appears everywhere to interfere with the protagonist's party for the sake of the Gym Challenge. They act to make Marnie the Champion. When Marnie battles, grunts rush in to cheer with horns and towels featuring her likeness. They are actually polite to people other than challengers. Their catchphrase involves ending sentences with '-de-el!' (e.g., 'We can't move out of the way-de-el!'). Marnie: A girl in her early teens with black hair and hip clothing. Her partner Pokémon, given to her by her brother Piers, is Morpeko (Electric/Dark). Despite Team Yell's overwhelming support and efforts to make her the Galar Champion, she finds their behavior burdensome. She is a kind and polite person who apologizes to the player and Hop for their interference. Marnie herself does not use the '-de-el' speech quirk.

A 10-year-old boy from Vermilion City in the Kanto region whose dream is to catch every Pokémon, specifically aiming for the Mythical Pokémon Mew he met as a child. He has an active personality but isn't particularly social. He has black hair and usually wears grey clothes. His partner Pokémon is Scorbunny (Fire).

A natural hard worker who specializes in Fairy-types because she only catches Pokémon she considers cute. She is like an idol at the Academy. She is from Nimbasa City in the Unova region. A girl in her early teens with pink hair, she is diligent, sharp, and caring. She wears pink clothes, and her partner Pokémon is Plusle (Electric).

A highly skilled trainer who masterfully handles Dragon-types. His motto is to enjoy everything. He suffers from sleepiness during the day but stays up late idling at night. He is from Opelucid City in the Unova region. A male in his early teens with a very laid-back personality, white hair with purple streaks, and yellow eyes. He wears a white shirt, a black jumper, and light purple shorts. His partner Pokémon is Archaludon (Steel/Dragon).

A beautiful girl in her early teens with talents in cooking, sewing, and dancing. She started her journey to follow Ash, whom she has a crush on. She has blonde hair and wears a pink hat, black top, and red skirt. She is kind and polite, often using the exclamation 'Ta-da!' naturally. Her partner Pokémon is Fennekin (Fire).

A male who is nearly a head taller than Ash. While his appearance makes him look like an uncle, he is actually 15 years old. He has a very mature face for his age. He is gentle and humorous but has a fiery temper when provoked. He has squinty eyes and falls in love instantly with any pretty older woman he sees. Whenever he meets a woman older than him, he loses his composure and hits on them, saying, 'I'm Brock, a man of fine taste.' He is excellent at cooking and housework. His partner Pokémon is Geodude (Rock).