Ruffnut, Tuffnut and Barf and Belch's Relationship

Ruffnut and Tuffnut share a Zippleback dragon they named Barf and Belch and the bond between dragon and rider started on the first movie, How to train Your Dragon, when Hiccup introduced the dragons to their new riders. They've been inseperable since.

How to Train Your Dragon
Not much scenes are shown in this film about the bond of the twins and their dragon, simply because it was already close to the end of the film that they started the bond with each other, although on the scenes of the war between the riders and the Red Death, the twins are scene to already have a playful (and at some times, annoying) attitude that goes the same with their dragon. But because the twins don't always agree with each other, this has also caused some problems with the dragon as well.