Big-Boobied Bertha from the How to train your Dragon novels by Cressida Cowell.

Big-Boobied Bertha is the mother of Camicazi. She is also leader of the Bog-Burglars. It has been told in the books that her boobies had killed before and many a smaller animal had suffered in their depths.

She first appeared in the book How to Speak Dragonese. The first notification of her is the letter she writes to Hiccup's father Stoick demanding the return of her heir and threatening an outbreak of war if she is not returned within two weeks.

The next time she appears is when she believes that Stoick is running away from her proposed war instead of looking for a Roman Fortress to rescue his son Hiccup. Bertha is delighted when Camicazi is returned to her by way of a Roman Observation balloon and by way of appology she returns the shield of Grimbeard the Ghastly that the Bog Burglars stole generations before.