Faustina Collari

"Born and raised in a world of poverty, the Thief was taught how to steal, run and climb to survive, alongside her brother. Always together, acting as a team, they once split a pair of scissors to make a weapon, swearing to protect each other. It's been 10 years now... and she's never forgotten the day she broke her promise."

―Ubisoft description.

Faustina Collari was born into hardship, and was thus forced to resort to thievery in order to survive. She protected her brother with her life, just as he protected her, with the two of them even splitting a pair of scissors to create matching weapons. However, at one point, Faustina's promise to her brother was broken, and he was lost.

Her genetic memories were later used by Abstergo Industries for the training of the Animus recruits, under the title of the Thief.

Trivia

• Faustina is the only original Assassin's Creed: Brotherhood multiplayer character to not appear in story mode, or in Assassin's Creed: Project Legacy. As such, very little is known about her or her brother.

Source

• Assassin's Creed: Brotherhood