Hiccup Horrendous Haddock  (voiced by Jay Baruchel) – A clumsy and underweight viking. He and his dragon, Toothless, share the strongest bond of all riders and dragons.Toothless – An extremely rare, male Night Fury befriended by Hiccup, and the only dragon that cannot fly without his rider, having lost his left tail fin in the first feature film.  Toothless has dark black scales, retractable teeth, and the ability to shoot plasma bolts.  Toothless also has the unique ability to navigate in dark places using echolocation.Astrid Hofferson (voiced by America Ferrera) – Hiccup's close friend and partner; and the unofficial second-in-command of the dragon training academy. She has a strong character, is one of the most courageous of the Dragon Riders, and is very competitive. She has a strong bond with her dragon, Stormfly. During Season 5 of Race to the Edge, Hiccup gives Astrid a betrothal necklace, making them officially engaged to be married.Stormfly – A blue, female Deadly Nadder befriended by Astrid. Like Hiccup and Toothless, Astrid and Stormfly display exceptional teamwork. Stormfly and Toothless share a friendly rivalry in most of the competitions Hiccup and Astrid devise. In addition to her magnesium-fueled fire bursts, Stormfly can launch spines from her tail.Fishlegs Ingerman (voiced by Christopher Mintz-Plasse) – One of Hiccup's close friends; has a great encyclopedic knowledge of dragons. He is not as courageous as the other Dragon Riders, but is a loyal friend, especially to Hiccup and Astrid. He has formed a very close relationship with his dragon, Meatlug.Meatlug – A brown, female Gronckle who bonded with Fishlegs. Because of her husky size and short wingspan, she lacks the aerobatic maneuverability and speed of the other dragons. She and Fishlegs have a very close, nurturing relationship. She also can eat a particular combination of iron ore and rocks and regurgitate a valuable metal known as "Gronckle iron".Snotlout Jorgenson (voiced by Zack Pearlman) –  One of Hiccup's friends; reckless, quarrelsome, and often seen mocking or annoying the other riders. He has a complicated relationship with his dragon, Hookfang.Hookfang – A red, male Monstrous Nightmare, ridden by Snotlout. Hookfang has a habit of attacking Snotlout or abandoning him when Snotlout tries to assert dominance, and does not always pay attention to Snotlout. In battle, Hookfang covers his skin with his flammable saliva and sets it on fire, without harming himself; this ability is almost never used when Snotlout is riding him.Tuffnut Thorston (voiced by T. J. Miller) and Ruffnut Thorston (voiced by Julie Marcus (season 1) and Andree Vermeulen (seasons 2–8)) – Male and female fraternal twins and followers of Hiccup. They constantly quarrel and disobey commands.Barf and Belch – A green, male, two-headed Hideous Zippleback jointly ridden by the twins, normally with Ruffnut riding the dragon's right head, named Barf (which can exhale explosive gas), and Tuffnut riding the dragon's left head, named Belch (which can ignite the gas). The heads are usually agreeable, but can have difficulty flying when their riders disagree, and sometimes quarrel as a result.

Question: What is the group name that Astrid is apart of?
Answer: Dragon Riders