Toothless is the name of Hiccup's Dragon in both the book series and film. In the books, Toothless is a young Seadragonus Giganticus Maximus, although it is originally believed he is a Common or Garden Dragon, while he's a larger, black Night Fury in the film adaptation.In the film, he is one of the first dragons to be trained (as shown in How To Train Your Dragon 2, where Hiccup's mother had already trained a Stormcutter named Cloudjumper) and serves as one of the most major characters in the franchise. He is the quintessential dragon in the series, and remains unrivaled in intelligence. He is presumed to be the only living Night Fury, at least on Berk and the surrounding Isles.
"Since she's beautiful, people think she's not tough. But you should never underestimate her."―Astrid talking about Stormfly.
Stormfly is Astrid/Camicazi's dragon. She first appeared in A Hero's Guide to Deadly Dragons and has appeared in every following novel. In the film adaptation, rather, she is a Deadly Nadder and her rider is Astrid."What we can't get you is another Barf and Belch" - Hiccup to the twins.
Barf and Belch is the male Hideous Zippleback owned and trained by Ruffnut and Tuffnut. Barf and Belch are like their owners, they have trouble which head goes what direction and focusing on one target. However, unlike Ruffnut and Tuffnut, they can work together and find their owners annoying with their constant bickering.
Hookfang is one of Stoick the Vast's dragons in the How to Train Your Dragon book series. He is also the Monstrous Nightmare belonging to Snotlout in both the film and thetelevision series.
Meatlug is Fishlegs' Gronckle from the film. In the film she was kept for Dragon Training and unnamed, but her name is revealed in Gift of the Night Fury. She's partly based on bothHorrorcow and Seaslug.
