Bulda is shown towards the beginning of the film, when King Agnarr and Queen Iduna are rushing to save Anna, after she is struck by Elsa's ice powers. A young Kristoff and Sven arrive at the scene, where Bulda adopts them.
Bulda appears later in the film, during the second meeting with the trolls and the "Fixer Upper" song sequence. Bulda takes Anna for Kristoff's girlfriend, along with the other female trolls, assist in dressing Anna in her troll wedding outfit.
- The Junior Novelization misspells her name as "Hulda".
- She is 700 years old, according to the film's official website.