Scott Pilgrim Vs. The World - Cast

Cast

Main characters

• Michael Cera as Scott Pilgrim, a 22-year-old Canadian, who falls in love with Ramona Flowers. He is the bass guitarist of the band Sex Bob-omb as well as a hyper-competent martial artist of some unknown, yet effective anime-style fighting technique.
• Mary Elizabeth Winstead as Ramona Flowers, a mysterious American delivery girl with a dating history that drives the plot of the film.
• Kieran Culkin as Wallace Wells, Scott's 25-year-old gay best friend and roommate.
• Ellen Wong as Knives Chau, a 17-year-old high school girl whom Scott dates before meeting Ramona.
• Alison Pill as Kim Pine, the 23-year-old drummer of Sex Bob-omb and one of Scott's ex-girlfriends.
• Mark Webber as Stephen Stills, the 22-year-old lead singer and "talent" of Sex Bob-omb.
• Johnny Simmons as "Young" Neil Nordegraf, a 20-year-old fan of Sex Bob-omb and Scott's replacement after he leaves the band.
• Anna Kendrick as Stacey Pilgrim, Scott's 18-year-old sister; she refers to Scott as her "little brother", this may be because she is notably wiser and more intelligent than her older brother.
• Brie Larson as Natalie "Envy" Adams, one of Scott's ex-girlfriends who went on to become the singer of the successful band The Clash at Demonhead.
• Aubrey Plaza as Julie Powers, Stephen's obnoxious ex-girlfriend.

The League of Evil Exes, in numerical order

1. Satya Bhabha as Matthew Patel, who has mystical powers, such as fireballs and levitation
2. Chris Evans as Lucas Lee, a "pretty good" skateboarder turned "pretty good" action movie star with super strength.
3. Brandon Routh as Todd Ingram, the bassist for The Clash at Demonhead who possesses telekinetic powers as a result of his veganism; he is the boyfriend of Scott's ex-girlfriend Envy Adams.
4. Mae Whitman as Roxanne "Roxy" Richter, a self-conscious half-ninja with the ability to teleport.
5. Shota Saito as Kyle Katayanagi, twin and popular Japanese musician with the ability to summon powerful creatures like dragons.
6. Keita Saito as Ken Katayanagi, twin and popular Japanese musician with the ability to summon powerful creatures like dragons.
7. Jason Schwartzman as Gideon Gordon Graves, owner of the Chaos Theatre and the mastermind behind the League of Evil Exes.

Other characters

• Kjartan Hewitt as Jimmy, Stacey's boyfriend; Wallace stole him and the two kiss as Ramona leaves the first round of the Battle of the Bands at the "Rockit"; from Stacey's reaction, it is implied that Wallace has done this before
• Ben Lewis as Other Scott, another one of Wallace's boyfriends
• Nelson Franklin as Michael Comeau, one of Scott's friends who "knows everybody"
• Christine Watson as Matthew Patel's Demon Hipster Chicks
• Chantelle Chung as Tamara Chen, Knives' best friend
• Don McKellar as Director, the director of the Lucas Lee film
• Emily Kassie as Winifred Hailey, a 16-year-old actress who was due to star in a film with Lucas Lee before he was defeated by Scott; she briefly appears on the film set at the Casa Loma
• John Patrick Amedori as the Chaos Theatre's bouncer
• Tennessee Thomas as Lynette Guycott, drummer for The Clash at Demonhead.
• Erik Knudsen as Luke "Crash" Wilson, singer and guitarist of the band Crash and the Boys who competes in the battle of the bands.
• Maurie W. Kaufmann as Joel, a member of Crash and the Boys
• Abigail Chu as Trisha "Trasha" Ha, the 8-year-old drummer of Crash and the Boys
• Kristina Pesic and Ingrid Haas as Sandra and Monique, two popular girls at Julie's party

Thomas Jane and Clifton Collins, Jr. appear uncredited as the Vegan Policemen. The author, Bryan Lee O'Malley, and his wife, Hope Larson, also appear uncredited as Lee's Palace bar patrons. Reuben Langdon (known for being the voices of Ken in Street Fighter IV and Dante in the Devil May Cry series) has a cameo as one of Lucas Lee's stunt doubles. Bill Hader provides the video-game inspired voiceover.