Bulda is shown towards the beginning of the film, when The King and Queen of Arendelle 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".
- Bulda seems to be very fond of Anna, since she knew that Anna and Kristoff would eventually get together.
- It's possible that Bulda may be based on the Old Lady of the Garden from the original Snow Queen fairytale.
- She is 700 years old, according to the website of Frozen.