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Rex

Jon Heder

Napoleon Dynamite

Efren Ramirez

Pedro Sanchez

Sandy Martin

Grandma

Shondrella Avery

LaFawnduh

Jared Hess

Director

Tina Majorino

Deb

Jon Gries

Uncle Rico

Aaron Ruell

Kip Dynamite

Haylie Duff

Summer

Emily Kennard Dunn

Trisha

Carmen Brady

Starla

Trevor Snarr

Don

Ellen Dubin

Ilene

Samantha Marsden

School Kid

J.C. Cunningham

Jock #1

James Smooth

Jock #2

Brian Petersen

Lance

Brent Taylor

Nathan

Tom Lefler

Principal Svadean

Elizabeth Miklavcic

Renae

Jamen Gunnell

Vern

Nanette Young

Corrina

Walter Platz

Cashier

Nano De Silva

Cholo #1