Height - 185cm 68kg Male Has auburn hair and green eyes. Dragon Rider Brave and kind-hearted. Eloquent speaker. Enjoys a moderate amount of joking around. The only son of Stoick, the chief of Berk Island, where Vikings have been at war with dragons for seven generations. However, in the beginning, he was a dragon slayer who feared dragons and was practically an outcast among his father, the villagers, and even his peers. It is no exaggeration to say that Toothless was effectively his first friend and the only being he could communicate with. Later, he gains the recognition of his father and friends by playing a major role in resolving the conflict and coexisting with dragons. Perhaps because he worked in the forge since childhood, he is very skilled with his hands. Gobber even said he was ready to graduate. As the protagonist, he owns a helmet that covers his entire face, unlike the helmets of other Vikings. The face-covering part seems to be retractable. He is human. Partner dragon is Toothless.

Female human. Dragon Rider. A warrior of the Viking tribe, she has blue eyes, blonde hair, and a combative personality. Her hair covers one eye. She has a tsundere-like personality. Despite having perfect-daughter-like abilities, there is one thing she cannot do: cooking. She keeps a Deadly Nadder named 'Stormfly'. Partner dragon is Stormfly.

Dragon Species - Night Fury Male. Eye color is green. Black dragon. A Night Fury dragon, one of the rarest and most intelligent species. He can fire powerful plasma blasts and is characterized by a high, sharp sound, presumably from plasma boiling, before firing a breath. He is almost invisible during night flights. He is extremely fast and agile. Being highly intelligent, he can grasp and understand complex human intentions. He shows many cute sides through his actions, rich expressions, and various other traits. However, separate from his cute side, his combat power is the strongest among dragons. Among the dragons appearing in the work, he is on the smaller side and has a slender impression, but due to the characteristics of the Night Fury species, he possesses overwhelming flying ability and the immense firepower unique to plasma charges.

Tuffnut's twin sister, human. Dragon Rider. Her hair is pale blonde and her eyes are pale light blue. Seeing as she causes trouble together with Tuffnut, it's not that they have a bad relationship, but rather that the frequency of sibling bickering is just a bit high. She loves scenes of chaos or destruction and takes pride in annoying others. That said, she doesn't have a bad personality.

Ruffnut's twin brother, born 5 minutes earlier... Pale blonde hair, dark brown eyes. Has a similar personality to Ruffnut. Human. Tuffnut & Ruffnut's dragon species is the 'Hideous Zippleback'. Dragon Rider.

167cm Dragon Rider Male. His dragon is a Monstrous Nightmare named 'Hookfang'. A hoodlum who loves to swagger to the point where blustering is his specialty, ignoring Hiccup while openly hitting on Astrid. However, in reality, he is chicken-hearted and soft-inside; he gets completely discouraged if he receives even a slight wound, and it's common for him to scream or freeze up when frightened. He does possess basic strength. He holds a rival-like position to Hiccup, but he isn't all bad. He is human.

Male human. Dragon Rider. When it comes to dragons, he gets excited and talks by listing their characteristics like rapid-fire. Perhaps because his partner dragon 'Meatlug' is a Gronckle, which has a slow flight speed among dragons, he conversely has trouble getting used to dragons with high speeds. Slightly timid.

Hiccup's father and the chief of Berk, he is impressive with his enormous physique and bushy red beard. Best friends with Gobber the blacksmith. He seems to have already designated Hiccup as the chief, putting some pressure on him by saying he must become the next leader. His feelings for his son are sincere. He is a father who is hard as a rock on the outside but warmer and deeper than anyone on the inside. Stoick regards Hiccup as the chief who will rule Berk Island in the future and has high expectations, but Hiccup himself is not interested in such things and just wants to roam freely everywhere.

192cm Hiccup's mother. Kind. Twenty years ago, when Stoick broke into the house to kill a dragon, a dragon kidnapped Valka and disappeared. Since then, the residents of Berk thought Valka had been kidnapped and eaten by dragons, but in fact, she had been living as a guardian in the dragons' habitat for 20 years. She served the dragon king, the Bewilderbeast, and was rescuing dragons that had been injured by Drago.