Poor Beatrice and Belinda! It must be hard for them to have a sister who is soooo much younger and soooo much prettier than they are. Bianca is the youngest of three sisters that couldn’t be any more opposite. Always being picked on and lashing back at her sisters, she doesn’t know if it’s because she’s the youngest or her good looks that are the envy of her sisters. But really, does that give them any right to take it out on her? It’s not her fault she turned out perfect! Maybe they’d be happier if Beatrice wasn’t an old grump and Belinda wasn’t so concerned about other people!
Bianca is self-centered and vain, and is convinced that Beatrice and Belinda are jealous of her youth and beauty. She constantly argues with Beatrice and Belinda, who have to put up with the quarreling. Bianca thinks that Beatrice is an old grump and that Belinda worries for the others too much. In short, she thinks she is perfect.
Her first name, "Bianca," is Italian for "white," matching her favorite color and overall clothing color-scheme.
Beatrice, Belinda, and Bianca seem to be parodies of Prue, Piper, and Phoebe Halliwell from the TV Show Charmed, as the two pairs of siblings are powerful witches whose first names all start with the same consonant.
Though it's probably a coincidence, she could have been named after Bianca, the witch from Spyro the Dragon series