Ruffnut Thorston, one of the twins from 'How to Train Your Dragon', is 14 years old in the first film. As the series progresses, her age increases in line with the timeline of the story. She is 17-19 years old in 'Dragons: Race to the Edge', 19 in 'How to Train Your Dragon 2', 20 in 'How to Train Your Dragon: The Hidden World', and 29 in 'How to Train Your Dragon: Homecoming'.