Rebecca Crane

Rebecca Crane is one of the modern day Assassins introduced in Assassin's Creed II. She is the creator of the Animus 2.0 - which she affectionately refers to as "Baby" - and provides technical support for the Assassins alongside her partner, Shaun Hastings. She appears to be an old friend of Lucy Stillman, although, prior to the game, the two purportedly did not see one another for seven years, perhaps due to Lucy's internment at Abstergo.

In Assassin's Creed II, Rebecca serves as tech support for the Animus 2.0. She often leaves notes within the database entries that Shaun makes available for Desmond Miles while he is in the Animus, especially if the entries (i.e. about a particular structure) indicate the presence of a Glyph or Assassin's Tomb therein. The data module that Rebecca receives from Lucy with the records of the Abstergo version of the Animus allow Desmond to interact with the encrypted files Subject 16 left behind in Ezio Auditore da Firenze's memories.

Biography
It is unknown whether Rebecca is a "proper" Assassin like Desmond and Lucy. She makes allusions, but nothing is ever conclusively said about the nature of her place in relation to the Assassins. She did, however, play an important role in inducting Shaun Hastings into the Order. When Shaun, with his gifts for connection and conspiracy, endangered his own life by trying to tell the world what Abstergo was up to, Rebecca saved him from Templar silencers, and recruited him as an Assassin.

Assassin's Creed II
In Assassin's Creed II, Rebecca monitors the Animus to make sure nothing goes wrong (such as what happened at the start of the first Assassin's Creed). She will often provide a comment relating to being at the top of most rather tall buildings, such as remarking that "the view must be great" from the top of a church, or that she thinks Desmond is itching to get to the top of a bell tower.

Aside from providing technical support for the Animus, and her small segments of banter with Shaun and Desmond, Rebecca doesn't play a significant story role until the end of the game, when she helps Shaun pack up the Animus gear while Desmond and Lucy defend their location from Abstergo. As they escape into a truck, she is able to get the Animus working inside it, which allows Desmond to re-enter the Renaissance and finish any remaining memories while on the way to their second base up North. This consequently allows the player to finish up any Side Missions and plot elements they may have missed, such as Races and Feather collecting, to name a few.

Characteristics and personality
Rebecca is an energetic, somewhat immature young woman - despite the fact that she saved his life, Shaun Hastings is quick to belittle and gibe at her. She is tolerant and optimistic, representing Shaun's foil - she is the polar opposite of her colleague, friendly and talkative. She shows great pride in her work, praising her redesign of the Animus as having a far more enlightened and creative construct; a "competitive edge" as she calls it. She also remains convinced that, despite Shaun's dubiousness of their means, the Assassins are, as Desmond puts it, "the good guys."

Trivia

 * When in the Animus 2.0, Rebecca adds information to the database using the name REBECCAC84. This username holds her first name, the initial of her last name, and possibly her birth year. This may mean that she was 28 as of 2012.
 * When Lucy Stillman and Desmond Miles first enter the hideout, Rebecca greets Lucy happily and exclaims: "It's been so long... Seven years!" This means that the last time the two friends saw each other was in 2005.
 * In Assassin's Creed: Brotherhood, she appears to have put on make-up, unlike in Assassin's Creed II.
 * After losing her MP3 player, Rebecca sends an e-mail to her teammates about it, claiming that she "can't sleep without it."
 * She mentions to Desmond that she once went into the Animus, but comments that her ancestor's life as a Prussian mercenary was boring, due to spending several hours constantly shooting.
 * Before working for the Assassins, she loved playing sports and was once a snowboarder. However, after breaking her leg, she quit and discovered that she found technology more interesting.
 * In the e-mails in Assassin's Creed: Brotherhood, Shaun said to the others "Rebecca is a Templar." This, however, is meant sarcastically, as it was in response to Rebecca having told Lucy that Shaun had taken her food from the fridge.
 * She is shown to be a vegetarian in Assassin's Creed: Brotherhood, as she shows disgust when Desmond takes a bite of a hamburger, calling him a "carnivore." She then goes on to defend herself from Shaun, who attempts to explain how eating vegetables is not much different from eating animals.
 * Her email is Snowmass7, likely to reflect her previous hobby.

Gallery
Rebecca Crane