The Chief of Berk. Toothless's rider and the first person to ever train a dragon. In a relationship with Astrid. Male. Brown hair.

Hiccup's dragon. A Night Fury. Attacks by firing high-temperature plasma blasts. Has a puppy-like personality. Male. Black scales and green eyes.

Stormfly's rider. In a relationship with Hiccup. Female. Blonde hair, blue eyes.

Astrid's dragon. A Deadly Nadder. Attacks by launching spines from her body. Blue scales, yellow eyes. Female.

Meatlug's rider. Knows information about almost every dragon species. Chubby build. Blonde hair. Male.

Fishlegs's dragon. Attacks by breathing fire, but can only do so 6 times (recharges over time). Eats rocks (won't eat rocks she doesn't like). Yellow eyes, brown scales. Female.

Barf's rider. Has blonde dreadlocks. Ruffnut's twin brother (born 5 minutes earlier). Playful personality. Male.

Belch's rider. Blonde hair tied into three braids. Tuffnut's twin sister (born 5 minutes later). Playful personality. Female.

Shares a body with Belch. The right head, which exhales flammable methane gas. A Hideous Zippleback. One horn, green scales, yellow eyes, long neck, and two tails.

Shares a body with Barf. The left head, which creates explosions by sparking the methane gas exhaled by Barf. A Hideous Zippleback. One horn, green scales, yellow eyes, sharp teeth, long neck, and two tails.