Hilda:

Hilda is a tall, slender girl with long dark brown hair in a ponytail and blue eyes. Her hat is white and pink with a picture of a pink Poké Ball on it. She wears a white tank shirt that reaches her waist underneath a black waistcoat and a pair of denim shorts with white tear details on them. She wears black wristbands with a small pink stripe on both of them and matching black ankle boots with pink laces and soles, and a pair of black socks underneath. She also carries a pink messenger bag around.

"This hot-blooded lady loves trends, laughter, and, most of all, Pokémon battles. She's on a journey to grow stronger wherever she goes."

Speaking of Tomboy, what else can I say? This here is my best girl no competition. She LOVES battle so much that her sync move name is Battle Fanatic Heat Crash, and she is quite single minded where she dont on what's going on around her when she spent too much time on Battle and festivals. Still even though she is such a battle maniac, Hilda actually has the girly side of liking trendy stuff and fashionable things. Though her competitive spirit and passionate courage is still her biggest charm IMO. (She is also the ONLY female protage that won't smile or laugh as she execute sync move... scary)

Oh and based on her SC pokecenter quote, Hilda does participated in Pokemon musical before, so ya she probably likes to dress up her Pokemon too. An upbeat, strong-willed and unpredictable trainer that still shares that compassion with the rest of the FMC's. She has no knowledge of personal space or boundaries, her strong personality backs her up from being actually annoying into an endearing, wobbly girl as soon as she gets too excited.

Her signature Pokémon is her trustful Emboar, so strong that you don't even know what's the rest of her team composed of.

Hilbert:

Hilbert is a tall, thin boy. He has medium length, messy mud brown hair and brown eyes. He wears a black T-shirt underneath a sky blue jacket that has a sea blue neck and cuffs and a white zip with gray, slightly baggy pants tightened by a black belt with a silver metal buckle. He also wears a scarlet red cap that has a black Poké Ball logo, a scarlet red pair of shoes with black panels and white soles, and on his left wrist he wears a blue Xtransceiver. He carries a black and blue messenger bag with a large white Poké Ball in the center.

Hilbert seems rather cool but not mean or callous, just very formal and serious although genuinely kind-hearted. His interactions with N create the impression of a very patient, understanding person who is non-judgemental and always very understanding. He seems quite free of demons unlike Cheren and Bianca.

His main Pokémon is his Samurott, but Staraptor, Garbodor and Gallade back him up too. His other two Pokémon are a mistery, he never needed to pop them put.

Bianca:

Bianca is a young lady with short blonde hair, fair skin, and bright green eyes. She is also medium height and is slim, though she has very wide and well-defined hips. Bianca's usual outfit consists of a white shirt under an orange tank top, a tight fitting shin-length white skirt which gives her bottom half a wider shape, and a green beret with a white stripe running along the rim. To complete her outfit, she wears a white bracelet on her left arm, along with orange tights and yellow flats with white bows. She also carries around a green fringed shoulder bag for storage, which she wears on her right hip and slings over her left shoulder.

Bianca is a sweet and cheerful girl who worries about being weak and what to do in her life. She has a strong side by traveling without her father's consent showing her rebellious nature. Later on, she grows in confidence and accepts she'll never be the strongest trainer. She is protective, volunteering as a bodyguard for various characters, including Professor Juniper at Chargestone Cave. She's still slightly shy from time to time, the opposite of Hilda when relaxing them in self-consciousness.

Her strongest Pokémon is her Serperior, but Mienshao, Simipour, Musharna and Stoutland make her quite the strong trainer.

Cheren:

Cheren is a tall, slender young man with very pale skin, black eyes, and jet-black hair with a small tuft that sticks up from the top of his head.

Cheren wears a blue coat and a white shirt with an orange-red Y-shaped pattern, a black belt with a silver clasp, black dress pants, and blue shoes. He sports spectacles with orange-red rims.

He is a very serious, studious Trainer, whose goal is to become the Champion. He is rather stoical, but kind and respectful to the player character.In keeping with the theme of truth and ideals often seen in Black and White, Cheren represents those who pursue ideals—more precisely, as N pointed out in Chargestone Cave, the ideal of strength. His goal is to become the Champion and he always strives to become stronger. However, when Alder asked him for the first time why he strives to become stronger, he was quite unsure of his reasons. He then starts to ponder to himself how to do so—something that Alder said he used to do with his partner Pokémon as well—and what exactly it means to be strong. Alder also remarked that Cheren is a lot like Marshal.

Like the player and Bianca, Cheren receives a first partner Pokémon as a gift from Professor Juniper at the start of the game. He always chooses the first partner Pokémon with a type advantage over the player's first partner Pokémon. The player will encounter and battle him several times throughout the game. After the main storyline, Cheren can be found on Route 5. After talking to him there, he moves to Victory Road, where he can be battled once a day.

His Pokémon team is composed by Unfezant, Haxorus, Minccino, and Simisear.