Bia is one of the three tritagonists of Rio 2, the others being her siblings Carla and Tiago. She is also the daughter of Blu and Jewel, the younger sister of Carla, the older sister of Tiago, the granddaughter of Eduardo, and the great-niece of Mimi.
She is voiced by Amandla Stenberg in the English version of the movie, and by Agnese Marteddu in the Italian version of the movie.
Bia is very intelligent, the smartest of her siblings. She is polite, well mannered, kind-hearted, and dreamy. She seems to have a closer relationship with her father than with her mother. Bia doesn't like her possessions being taken away, glaring at Tiago (somewhat amusingly) when he takes her book from her.
Bia loves to learn and is a bit of a know-it all. She enjoys randomly saying facts, like the nutrition information she sees in a recipe book or while examining a larva in the jungle. Gentle and tame-natured like Blu, Bia is very sweet, though she isn't timid like him and enjoys thriving in the Amazon. She is shown to be interested in and love animals, reading about and saying facts on them.
Bia is smart like her father, always with a book in her wings and quick to spit out facts and figures. But when she gets to the Amazon, she is inspired by its awe and wonder. For once, she puts down her books and experiences the colorful life around her.