Astrid Hofferson is a teen Viking girl of the Hairy Hooligans tribe who attends Dragon Training with Hiccup and the other Viking teens. She's striking, tough, beautiful and her determined and strong personality makes her hard to impress. Astrid is 14 years old in How To Train Your Dragon, 15 in the series, and 20 in the sequel. She's Hiccup's main love interest in the first film, and his longtime girlfriend by the time of the sequel. In spite of initially not liking Hiccup or his new found friendship with Toothless, she soon has her opinion changed, tries to keep Toothless a secret, and starts to like Hiccup as her crush. Noteworthy, she is the only Viking without a helmet seen in the film as well as in the 3 short sequels and episodes (although Hiccup received a helmet from his father as a gift during the film, he rarely wears it).
Astrid is thin for a Viking but is given the advantage of agility because of this in Dragon Training. She has blonde hair with long bangs that cover the left side of her forehead, with a braided ponytail in back, and usually wears a leather band across her forehead. Astrid wears a skirt with spikes surrounding it and another skirt at the bottom of the spiked skirt with a pouch on her hip and also wears skull emblazoned shoulder pads. Notably, she's considered very attractive by her fellow Vikings her age. She is rarely seen without her trusty battle axe.
In HTTYD 2, Astrid's appearance now has her hair more neatly designed as it's parted to her left with her hair still braided in the back. Her outfit now has more fur around her shoulders, that takes the form of a hood, along with a red shirt. She still wears her shoulder pads but now has arm bands that are larger and with fur now. Like before, she still has her axe.
- "I'm more of an old-fashioned take-it-down-with-an-axe-and-then-lop-its-head-off kind of girl."
- — Astrid
Astrid is shown to be determined and extremely dedicated to becoming a Viking Warrior, and intensely patriotic of the Viking way. She is generally uninterested in the other teenagers, preferring to study and train on her own to become a better fighter. She is also rather short tempered (something which Snotlout points out) and always hits people who have angered her in some way. In the beginning, she has the most success in Dragon Training. In the film, she is shown to be serious and highly dedicated to one day fighting dragons. However, she was very kind and compassionate on many occasions and is shown to have a lighter side in Gift of the Night Fury, going out of her way to bring Snoggletog joy to Berk.
Regarded as the most proficient of the teenage Vikings, and possibly due to the pressure of this reputation as well as her innate pride, Astrid is initially shown in the film as being something of a perfectionist, having incredibly high standards for herself, as well as a very low tolerance for competition, as she quickly becomes jealous of Hiccup as his skills improve and is frustrated by his success over her. She later reveals her suspicious side, following and spying on Hiccup to discover his secret. Astrid also has a caring side, although this is hidden by an initial attempt at violence to cover it up. Astrid's name is North Germanic for "Divine Beauty", which seems suits her for her appearance and character role. She is also the only Viking with a name that doesn't appear to be an insult.
Alongside Hiccup and Fishlegs, Astrid is the most knowledgeable in dragons, knowing of various breeds' shot-limits, behaviors, and of course she specializes in Deadly Nadders, like her dragon Stormfly. When it comes to her dragon, Hiccup and Toothless, Astrid is somewhat kinder and gentler. She cares deeply for them, and has come to love Stormfly, who in turn is loyal to her, being there to greet her in the morning when Astrid wakes up. The bond between Astrid and Stormfly appears to be very strong, especially when Stormfly allows Astrid to touch her babies, though Stormfly did allow Hiccup to touch them as well.
She often provides her form of advice called the Honey & the Hatchet (you tell someone what they want to hear, the honey part, before you hit 'em in the head with something they don't, the hatchet part).She also seems to have a great deal of knowledge of the 'Viking traditions'.
Due to her pride and rather short temper, she could sometimes be somewhat imprudent and could act before thinking things through. At these times she would put herself in grave danger despite the fact that the odds were very clearly against her, like when she fought the Flightmare which was considered so fierce, everybody in Berk had to shelter themselves in their homes.
In HTTYD 2, though not much is shown of her character yet, Astrid appears to have grown more mature, as she doesn't seem to be as serious as before and seems to enjoy hanging out with her fellow teen Vikings more, but more so with Hiccup. She also seems to have gained a better sense of humor, as she teased Hiccup about how he walks and talks after his talk with Stoick. She and Hiccup even exchange few cheek kisses.