What is twins from how to train your dragon?

In the movie "How to Train Your Dragon," there are two sets of twin characters: Tuffnut and Ruffnut Thorston, twin siblings who are known for their mischievous behavior, and Barf and Belch, twin dragons who are also known for their unique two-headed form.

Tuffnut and Ruffnut both have blonde hair and light blue eyes, and are often seen bickering with each other or getting into trouble. Despite their differences, they are extremely close and often work together to solve problems.

Barf and Belch are two-headed dragons who are bonded together and cannot survive apart. They have a unique ability to shoot fire out of both of their heads at the same time, making them a powerful ally for Hiccup and his dragon, Toothless.

Overall, the twins in "How to Train Your Dragon" demonstrate the special bond and connection that can exist between siblings, whether they are human or dragon.