Brigitte Fitzgerald is a fictional character and the main protagonist in the Ginger Snaps film trilogy.

Brigitte Fitzgerald was the concept of Canadian screenwriter Karen Walton and film director John Fawcett.

She undergoes several transitions: from "hero worship to independence as she tries to hang onto her sisterly bond" and "frightened goth mouse to something like the little werewolf hunter who could".

Brigitte, the second daughter of Pamela and Henry Fitzgerald, is a bright 15-year-old with a love for biology, having skipped a grade.

The sisters have a strained relationship with their parents, who play a passive and irritating role, effectively absent as guiding figures.

The film begins on an atypical day in high school for Brigitte, finding out that Ginger, her sister, has started her period.

Observing Ginger's unnatural rate of healing from the attack and not knowing what attacked them, with no answers and no other choice, Brigitte breaks with her "introverted" persona to connect with local high-school drug dealer Sam (who ran over the beast chasing the sisters, saving them) for more information; he suggests the beast might be a lycanthrope.

Brigitte discovers physical and mental changes in Ginger, reminiscent of puberty, such as hair sprouting from wounds and heavy menstruation.

After learning about Ginger killing a neighbor's dog, Brigitte tries a proposed silver ring piercing treatment by Sam, which proves ineffective.

Brigitte and Sam take Ginger, who is rapidly undergoing the final stages of transformation into a werewolf, to the Fitzgerald house to create more cure.

At the Fitzgerald house, a fully transformed Ginger escapes, but Brigitte and Sam successfully create more cure in the kitchen closet amidst the turmoil.

Compared to the first film Ginger Snaps, Brigitte is more determined and confident in herself and no longer relies on her sister for help.