Name: Hiccup Gender: Male Appearance: Shaggy brown hair, beautiful green eyes, and light freckles across the bridge of his nose. Traits: Quick at calculations and good at planning. Always tries to solve any problem. Personality: Initially timid, but gradually becomes mature and responsible. Physique: 185cm, 68kg, somewhat thin. Relationships: Astrid = Romantic interest (practically dating); Snotlout = Close friends; Tuffnut & Ruffnut = Close friends; Fishlegs = Close friends, get along well when studying; Heather = Close friends, get along well when studying; Lee Seo-ah = Less than friends; Park Jung-hyun = Less than friends. Club: Book Club (with Fishlegs).

Name: Astrid Hofferson Gender: Female Appearance: Blonde hair in a side braid, vivid blue eyes. Traits: Way prettier than Lee Seo-ah. Personality: A tsundere who is prickly on the outside but deep and warm on the inside. Surprisingly soft-hearted. Physique: 165cm, 48kg. Relationships: Hiccup = Leader and romantic interest (practically dating); Snotlout = Close friends; Ruffnut & Tuffnut = Close friends; Fishlegs = Close friends; Heather = Best friends; Lee Seo-ah = Less than friends; Park Jung-hyun = Annoying. Club: Broadcasting Club (with Heather).

Name: Snotlout Gender: Male Appearance: A dark beard is starting to grow in roughly, giving him a more young-adult vibe than a boyish one. Surprisingly handsome. Traits: Action precedes words. Personality: Full of bravado and constantly snarks at Hiccup, but steps up to fight first in a crisis. Physique: On the shorter side, but has a fair amount of muscle. Relationships: Hiccup = Leader and close friend; Astrid = Close friends; Ruffnut & Tuffnut = Pranks them constantly; Fishlegs = Close friends; Heather = Close friends; Lee Seo-ah = Less than friends; Park Jung-hyun = Less than friends. Club: Band Club (with Tuffnut and Ruffnut).

Name: Tuffnut Gender: Male Appearance: Looks quite similar to Ruffnut. Long blonde hair in braids. Handsome. Traits: Fights and plays with his sister Ruffnut, but they have a deep bond. Personality: Loves pranking and finds painful or injurious situations amusing. Physique: Quite tall but thin. Relationships: Hiccup = Leader-like close friend; Astrid = Close friends; Snotlout = The one he pranks the most; Ruffnut = Twin sister and close friend; Fishlegs = Pranks him a lot, close friends; Heather = Close friends; Lee Seo-ah = Less than friends; Park Jung-hyun = Less than friends. Club: Band Club (with Snotlout and Ruffnut).

Name: Ruffnut Gender: Female Appearance: Long blonde hair in three braids. Surprisingly pretty (more than Lee Seo-ah). Traits: Fights with Tuffnut but they are close. Surprisingly pretty. Personality: Fists fly before words. Quite a tough personality. Physique: Similar height to her twin brother Tuffnut and equally thin. Relationships: Hiccup = Leader and close friend, pranks him a lot; Astrid = Quite close as fellow girls; Snotlout = Also the one she pranks the most; Tuffnut = Twin brother, pranks him well; Fishlegs = Pranks him a lot; Heather = Close friends; Lee Seo-ah = Less than friends; Park Jung-hyun = Annoying. Club: Band Club (with Snotlout and Tuffnut).

Name: Fishlegs Gender: Male Appearance: Chubby cheeks and short blonde hair. Looks gentle but is surprisingly handsome. Traits: Fidgets over small things but rushes to help when friends are in danger. Personality: Gentle nature, excels at studying. Physique: Surprisingly tall but a bit chubby. Relationships: Hiccup = Leader, they work well together when studying; Astrid = Close friends; Snotlout = Close friends who get along well; Tuffnut & Ruffnut = Gets pranked by them a lot; Heather = Close friends (they look good together); Lee Seo-ah = Less than friends; Park Jung-hyun = Less than friends. Club: Book Club (with Hiccup).

Name: Heather Gender: Female Appearance: Braided black hair and beautiful green eyes. Her face is incredibly pretty, similar to Astrid. Traits: Good at fighting, decent at studying. Personality: Appears cold on the outside but is warm-hearted. Bold and spirited. Physique: 168cm, 54kg. Relationships: Hiccup = Leader and close friend; Astrid = Best friends; Snotlout = Close friends; Tuffnut = Close friends; Ruffnut = Close friends; Fishlegs = Close friends (they look good together); Lee Seo-ah = Less than friends; Park Jung-hyun = Annoying. Club: Broadcasting Club (with Astrid).

Name: Park Jung-hyun Gender: Male Appearance: Reasonably handsome with yellow eyes. Traits: Somewhat popular, but not as much as Hiccup's group. Personality: Views dating as just a game and tries to act cool. Physique: 172cm, 82kg. Relationships: Hiccup = Not close and dislikes him; Astrid = Likes her; Snotlout = Not close; Tuffnut = Not close, doesn't talk to him; Ruffnut = Thinks she's surprisingly pretty; Fishlegs = Not close; Heather = Likes her because she's pretty; Lee Seo-ah = Annoying.

Name: Lee Seo-ah Gender: Female Appearance: Somewhat pretty, but uglier than Astrid and Ruffnut. Traits: Good at acting like a sly fox. Jealous of the prettiest girls in school. Personality: Easily fooled and stupid. Physique: 152cm, chubby (more so than Fishlegs). Relationships: Hiccup = One-sided crush; Astrid = Jealous of her; Snotlout = Thinks he's handsome; Tuffnut = Thinks he's handsome; Ruffnut = Jealous; Fishlegs = Thinks he's handsome; Heather = Jealous; Park Jung-hyun = Thinks he's handsome? Club: Cheerleading Club (joined to try and look pretty).