Title: Alyson Stoner
Content:  film Step Up 3D opposite Adam Sevani where she reprised the role. Stoner uploaded a video onto her official YouTube page of her final dance rehearsal which introduced other cast members. The same year, Stoner returned to reprise her role as Caitlyn Gellar in Camp Rock 2: The Final Jam, a sequel to Camp Rock. Stoner also guest-starred in the television drama series House as a skater. In 2011, Stoner started working with record producers, songwriters and a vocal coach to change her vocal style from "kiddie-pop" to a more soulful pop vibe with a little alternative edge for her first 
Title: Alyson Stoner
Content:  Alyson Rae Stoner (born August 11, 1993 ) is an American actress, singer and dancer. She is known for her roles in Cheaper by the Dozen (2003), Cheaper by the Dozen 2 (2005), The Suite Life of Zack & Cody (2005–2007), Camp Rock (2008), Camp Rock 2: The Final Jam (2010), and the Step Up franchise (2006–2014). She has been a background dancer for several artists including Missy Elliott, Eminem, Kumbia Kings, Outkast, and Will Smith. Her television roles include serving as the host of Disney Channel's Mike's Super Short Show (2001–2007) for voicing Isabella Garcia-Shapiro in Phineas and Ferb (2007–2015, 2020). She lent her voice to the Kingdom Hearts franchise (2008–2020), and the Holly Hobbie and Friends film series (2006–2008). Stoner has also released twelve singles and two extended plays.
Title: Camp Rock
Content: Demi Lovato as Mitchie Torres, a young girl aspiring to be a singer. ; Joe Jonas as Shane Gray, the spoiled and arrogant lead singer of the popular music trio Connect 3. ; Meaghan Martin as Tess Tyler, a shallow and self-centered girl known as the "diva of Camp Rock". ; Alyson Stoner as Caitlyn Gellar, a Camp Rock attendee whom Mitchie befriends. ; Maria Canals-Barrera as Connie Torres, Mitchie's mother and Camp Rock's new cook. ; Daniel Fathers as Brown Cessario, Camp Rock's camp director. ; Julie Brown as Dee La Duke, Camp Rock's musical director. ; Anna Maria Perez de Taglé as Ella Pador, a Camp Rock attendee and Tess's 
Title: Camp Rock 2: The Final Jam
Content: Demi Lovato as Mitchie Torres, a young girl aspiring to be a singer, now returning for her second year at Camp Rock. ; Joe Jonas as Shane Gray, the lead singer of the band Connect 3 and Mitchie's love interest. ; Nick Jonas as Nate Gray, a member of the band Connect 3. ; Kevin Jonas as Jason Gray, a member of the band Connect 3. ; Alyson Stoner as Caitlyn Gellar, a Camp Rock attendee and Mitchie's friend. ; Anna Maria Perez de Tagle as Ella Pador, a Camp Rock attendee and Mitchie's friend. ; Jasmine Richards as Margaret "Peggy" Dupree, a Camp Rock attendee and Mitchie's friend. 
Title: Camp Rock 2: The Final Jam
Content:  Roshon Fegan as Sander Loyer, a Camp Rock attendee. ; Jordan Francis as Barron "Barry" James, a Camp Rock attendee. ; Daniel Fathers as Brown Cesario, Camp Rock's camp director. ; Daniel Kash as Axel Turner, Camp Star's founder and Brown's ex-bandmate. ; Matthew "Mdot" Finley as Luke Williams, the lead singer of Camp Star. ; Meaghan Martin as Tess Tyler, Mitchie's nemesis from the previous film, who later turns friend. ; Chloe Bridges as Dana Turner, Axel's daughter and Nate's love interest. ; Maria Canals-Barrera as Connie Torres, Mitchie's mother. ; Arisa Cox as Georgina Farlow, the host of Hitz TV, the television network covering Camp Wars. 
Title: Alyson Stoner
Content:  In 2001, Stoner became the co-host of the Disney Channel Mike's Super Short Show along with Michael Alan Johnson, an infomercial segment regarding forthcoming Disney releases. In 2003 and 2005, she appeared as Sarah, one of the twelve Baker children, in the successful comedies Cheaper by the Dozen and Cheaper by the Dozen 2. She has also appeared in several television shows aimed at the preteen audience, including The Suite Life of Zack & Cody, That's So Raven and Drake & Josh. In 2006, she had a small film role in Step Up as Camille, Channing Tatum's character's younger foster sister. She 
Title: Camp Rock
Content:  Mitchie Torres (Demi Lovato) is a young musician aspiring to be a singer. She wants to go to a summer music camp named "Camp Rock". Since her family cannot afford the tuition, Mitchie's mother, Connie Torres (Maria Canals-Barrera), arranges to cater food for the camp, thus allowing Mitchie to attend. In return, Mitchie must help her mother in the kitchen. Shortly after arriving at camp, Mitchie meets a girl named Caitlyn (Alyson Stoner). Meanwhile, Shane Gray (Joe Jonas), the spoiled and arrogant lead singer of the popular music trio Connect 3, is assigned to be in charge of dance classes at Camp Rock by his bandmates Nate Gray (Nick Jonas) and 
Title: Camp Rock
Content:  ; Jasmine Richards as Margaret "Peggy" Dupree, a Camp Rock attendee and Tess's friend. ; Jordan Francis as Barron James, a Camp Rock attendee and rapper. ; Roshon Fegan as Sander Loyer, a Camp Rock attendee and rapper. ; Nick Jonas as Nate Gray, a member of the popular music trio Connect 3. ; Kevin Jonas as Jason Gray, a member of the popular music trio Connect 3. ; Aaryn Doyle as Lola Scott, a Camp Rock attendee and singer. ; Giovanni Spina as Andy, a Camp Rock attendee and drummer. ; Edward Jaunz as Steve Torres, Mitchie's father. ; Jennifer Ricci as T.J. Tyler, Tess's mother and a famous singer. 
Title: Camp Rock
Content:  Camp Rock is a 2008 American musical television film directed by Matthew Diamond and starring Demi Lovato, Joe Jonas, Meaghan Martin, Maria Canals-Barrera, Daniel Fathers, and Alyson Stoner. It is about Mitchie (Demi Lovato), a young girl aspiring to be a singer, and her time at Camp Rock, a summer music camp, where she will discover friends, adversaries, romance, and her voice. The film premiered on Disney Channel on June 20, 2008. Camp Rock was the second DCOM to air on ABC's The Wonderful World of Disney after its premiere on Disney Channel and was placed on the iTunes Store for digital purchase shortly after its premiere. The film was watched by 8.9 million viewers on the night of its premiere and is currently the third highest viewed DCOM of all time, behind High School Musical 2 and Wizards of Waverly Place: The Movie. The film was followed by a sequel, Camp Rock 2: The Final Jam (2010).
Title: Alyson Stoner
Content:  album. On April 4, 2010, Stoner posted a video to her YouTube Channel announcing the release of her debut single "Flying Forward" on April 20, 2010. Stoner released her debut EP entitled Beat the System in 2011. She also appeared in Wii Fit related videos on the Nintendo Channel on the Wii video game console demonstrating balance exercises. Stoner replaced Hayden Panettiere as the voice of Kairi in Kingdom Hearts Re:Chain of Memories, Xion in Kingdom Hearts 358/2 Days, and both characters in Kingdom Hearts III. She voiced the character Opal in seasons three and four of The Legend of Korra.

Question: who does alyson stoner play in camp rock?
Answer: Caitlyn Gellar.