The Twins have a complex yet rather typical relationship for fraternal twins. As kids, they always seem to be physically fighting and finding glee in the other’s pain.
As time goes on, however, they turn toward apathy toward each other, and eventually mature into admitting outwardly that despite all the fighting and arguing, they’re inseparable and love each other dearly. Ruffnut Eugene Thorston is a teenage member of the Hairy Hooligan Tribe. She is the fraternal twin of Tuffnut Thorston, whom she often argues with, sometimes to the point of physical violence, though never seriously enough to separate them for too long. She is 14 years old in the first film, three shorts, and first two television series, 17-19 in Dragons: Race to the Edge, 19 in How to Train Your Dragon 2, and 20 in How to Train Your Dragon: The Hidden World. Her dragon is a Hideous Zippleback named Barf and Belch, which she shares with her brother. Tuffnut LaVerne Thorston is a teenage member of the Hairy Hooligan Tribe. He is the fraternal twin of Ruffnut Thorston in the movie franchise and they are constantly arguing with each other, often to the point of physical violence against each other or other Berkians, though never seriously enough to separate them for too long.