School of Rock - Cast

Cast

• Dewey Finn (Jack Black) - Dewey is a down-on-his-luck, energetic, 30-year-old, wannabe rock superstar.
• Rosalie "Roz" Mullins (Joan Cusack) - The reluctantly uptight principal of Horace Green Elementary.
• Ned Schneebly (Mike White) - Ned is Dewey's roommate and best friend. He is described as a pushover by his girlfriend, Patty.
• Patty Di Marco (Sarah Silverman) - Ned's mean girlfriend who works for the mayor. She hates rock music and controls what Ned does, ensuring that he does not go back to being a rock fanatic. She makes no secret of her disapproval for Dewey, constantly berating him for his lack of a proper job and inability to pay rent.
• Summer Hathaway (Miranda Cosgrove) - The class factotum and band manager, Summer is determined to please and succeed, even if it means using somewhat unethical means. Dewey's nickname for her is "Tinker Bell".
• Zack Mooneyham (Joey Gaydos Jr.) - The talented but shy lead guitarist of the School of Rock. His overbearing father has a large and domineering influence on him. Dewey's nickname for him is "Zack-Attack".
• Freddy Jones (Kevin Clark) - The punk rock, delinquent drummer of the School of Rock. He evidently has made a hobby out of pyromania. Dewey's nickname for him is "Spazzy McGee".
• Katie (Rebecca Brown) - Originally a cellist, Katie takes up the bass guitar. She is portrayed as a quiet girl, but eagerly takes interest in rock music. In the commentary, it is revealed during the credits she was supposed to have a solo, but it was cut out. Dewey's nickname for her is "Posh Spice".
• Lawrence (Robert Tsai) - A quiet, awkward "boffin" who becomes the keyboardist for the band. Dewey's nickname for him is "Mr. Cool".
• Tomika (Maryam Hassan) – An insecure girl who is originally a roadie nicknamed "Turkey Sub" but after discovering her amazing voice, is nicknamed "Songbird" and sings back up.
• Marta (Caitlin Hale) - Marta is another back-up singer, seemingly more lively than other classmates, showing off her voice with "Tomorrow" from the musical Annie. Dewey's nickname for her is "Blondie".
• Alicia (Aleisha Allen) - Alicia volunteers her singing voice to become a back-up singer, "auditioning" with Amazing Grace. Dewey's nickname for her is "Brace Face".
• Billy (Brian Falduto)- Originally assigned security, the effeminate Billy requests he be band stylist instead. Dewey's nickname for him is "Fancy Pants".
• Gordon (Zachary Infante) - Gordon is a roadie and is noted for his exceptional computer skills. He tends to get stressed easily when his plans do not work out, but Dewey inspires confidence in him. Nicknamed "Roadrunner".
• Marco (James Hosey) - A red-head who is also a roadie with Gordon. Nicknamed "Carrot Top".
• Frankie (Angelo Massagli) - At the beginning of the film, he is good friends with Freddy, and the one who interacts/jokes with him the most. He works on security. Nicknamed "Tough Guy".
• Leonard (Cole Hawkins) - He works on security along with Frankie. Nicknamed "Short Stop".
• Eleni and Michelle (Veronica Afflerbach and Jordan-Claire Green respectively) - Designated the groupies by Dewey.
• Theo (Adam Pascal) - Theo is the leader of Dewey's old band No Vacancy.
• Spider (Lucas Babin) - Spider is the guitarist who replaces Dewey in No Vacancy.
• Neil (Lucas Papaelias) - Neil is the bass guitarist of No Vacancy.
• Pete DuCard (Kevin Clifford) - Pete is the garbage man.