Jack Black character Dewey Finn
Sarah Silverman character Patty Di Marco
Mike White character Ned Schneebly
Joan Cusack character Rosalie Mullins
Miranda Cosgrove character Summer Hathaway
Chris Stack character Doug
Jordan-Claire Green character Michelle
Caitlin Hale character Marta
Rebecca Brown character Katie
Joey Gaydos Jr. character Zack Mooneyham
Kevin Alexander Clark character Freddy Jones
Maryam Hassan character Tomika
Lucas Babin character Spider
Aleisha Allen character Alicia
Veronica Afflerbach character Eleni
Robert Tsai character Lawrence
Angelo Massagli character Frankie
Cole Hawkins character Leonard
Brian Falduto character Billy
James Hosey character Marco
Zachary Infante character Gordon
Jaclyn Neidenthal character Emily
Suzzanne Douglas character Tomika's Mother
Eron Otcasek character Musician
Carlos Velazquez character Musician
Kimberly Grigsby character Mrs. Sheinkopf
Lee Wilkof character Mr. Green
Kate McGregor-Stewart character Mrs. Lemmons
Wally Dunn character Gym Teacher
Tim Hopper character Zack's Father
Michael Dominguez-Rudolph character Art Student
Crash Cortez character Max
Nicky Katt character Razor
John Highsmith character Tony
Heather Goldenhersh character Sheila
Timothy "Speed" Levitch character Waiter
Scott Graham character Punk Rock Guy
Sharon Washington character Alicia's Mother
Kim Brockington character Leonard's Mother
Marty Murphy character Concerned Father
Kathleen McNenny character Freddy's Mother
Joanna Adler character Summer's Mother
Robert Lin character Lawrence's Father
Barry Shurchin character Cop
MacIntyre Dixon character Bus Driver
Amy Sedaris character Mrs. Haynish
Mary Fortune character Teacher's Assistant
Mandy Siegfried character Female Employee
Elisa Pugliese character Concert Goer
Carlos J. Da Silva character Security Guard
Ian O'Malley character Radio Exec
Chris Line character Radio DJ
Kyle Meaney character Toby
Frank Whaley character Battle of the Bands Director
Lauren Adler character Concert Goer
Kelly Anne Burns character Groupie
Leanne Cabrera character Concert Goer
Catherine A. Callahan character Concert Goer
Lucas Papaelias character Neil
Adam Pascal character Theo
Cedric Cannon character Leonard's Dad
Mike Clemente character Crazed Fan
Anivile Daniel character Concert Goer
Jane DeNoble character Billy's Mom
Caileigh Scott character Concert Goer
Karen Nazarov character Groupie
Riley G. Matthews Jr. character Blood Brothers MC Biker
Jada Montemarano character Student
Mateo Moreno character Concert Goer
Lian Moy character Student
Ryan O'Connor character No Vaccancy's Biggest Fan
Scott Ross character Concert Goer
Johnny Sullivan character Guy in Crowd Who Catches Dewey
Jamie Vergan character Concert Goer
Joe Wachowski character Concert Goer
