Stacey Pilgrim is Scott's 19-year-old (20 in book 6) younger sister. She works at the same Second Cup with Julie Powers and is also friends with Ramona. She's based on (and named after) Bryan Lee O'Malley's real sister Stacey. She sometimes calls Scott her little brother, probably because she is more grown up and mature. She has no problem interjecting her opinions and morals into Scott's life. She apparently keeps up via Wallace's texts, so they could be considered friends, though she sometimes expresses bitterness to Wallace when he constantly steals her boyfriends.
Stacey eventually fell into a relationship with Jimmy, whom she brought to Club Rockit to see Sex Bob-omb play. A drunken Wallace Wells seduced him after Crash and the Boys played Last Song Kills Audience, causing a furious Pilgrim to break up with him. Still, she apparently keeps up via Wells' texts, so they could be considered friends.
Personality and traits
Stacey Pilgrim's most dominant traits is her knack for gossip and a tendency to always say what she thinks, especially toward her older brother who she keeps interjecting her opinions and morals to. She sometimes calls Scott her little brother, probably because she is more grown up and mature than he is.
Stacey dislikes cats and finds the way they move "unnatural".
Portrayal in adaptions
In vs. the World
Stacey Pilgrim is played by Anna Kendrick(Mariana Ortiz Latin Mexican Dubbing), whose previous works include the role of Beca in the Pitch Perfect film series, as well as roles in Elsewhere, Up in the Air, The Mayor and the Twilight film series.
Stacey is very gossipy in the movie, a running gag in the movie is that Wallace often texts her about the latest happenings in Scott's love life (once even whilst he's unconscious), causing Stacey to call immediately afterward.She even Lost her Boyfriend Jimmy to Wallace after Scott Defeated Ramona's 1st Evil Ex.
Like in the novels, she is quick to impose her (often blunt) opinions on Scott, such as telling him off for dating Knives. At the same time, she is shown to be close to him and even comforts him after Ramona seemingly goes back to Gideon.
In the Game
Stacey appears in the video game as a background character and a vendor in World 1. She also appears in World 6. A secret path will take you to Mobile's home and she is there (for some reason) before you meet Mobile. She also appears in the end credits as an audience to a Shatter Band concert.
Behind the scenes
Once in both the book and movie, Stacey refers to Scott as her "younger brother", despite being about four years younger than him. This was pointed out by Jimmy in Volume 1. The reason for this could refer to the fact that Stacey acts much more mature than Scott. Ironically, Stacey's actress Kendrick is older than Scott Pilgrim's actor, Michael Cera.
Compared to the other female characters in the series, Stacey is a relatively normal person, she is relatable and her sanity is difficult to question.
At one point, Stacey can be seen wearing a T-shirt with the motif of a star from the Super Mario games, which Scott also does once. At another, she is wearing a T-shirt with the Superman 'S' logo.
Bryan Lee O'Malley has stated that if he were to remove any character from Scott Pilgrim, it would be Stacey because he was uncomfortable with her resemblance to his real-life sister. He said he wished to at least have changed her name, so as to not make it all too obvious.