Ross Lynch

Jeffrey Dahmer

Alex Wolff

John 'Derf' Backderf

Anne Heche

Joyce Dahmer

Dallas Roberts

Lionel Dahmer

Liam Koeth

Dave Dahmer

Nancy Telzerow

Carol Backderf

Tommy Nelson

Neil

Harrison Holzer

Mike

Brigid Naughton

Melody

Cameron McKendry

Moose

Katie Stottlemire

Penny

Brady M.K. Dunn

Bossy

Jake Ingrassia

Gooch

Michael Ryan Boehm

Shorty

Ben Zgorecki

Bully Jock

Dontez James

Charlie Smith

Miles Robbins

Lloyd Figg

Gabriela Novogratz

Lisa Watkins

Jack DeVillers

Oliver Zlatka

Dave Sorboro

Steven Hicks

Joey Prines

Snarky Slacker

Kris Smith

Ms Bowles

Adam Kroloff

Mr Burlman

Christopher Mele

Mr Fedele

Joey Vee

Mr Hicks

Tom Lepera

Mr Lapolla

Vincent Kartheiser

Dr Matthews

Maryanne Nagel

Mrs Woodard

Sydney Meyer

Bridget

Lauren Rhodes

Aide

Tom Luce

Vice President Walter Mondale

Carmen Gangale

Grocery Store Manager

Shane Patrick O'Neill

Restaurant Manager

Joe Fishel

Market Shopper

Andrew Gorell

English Teacher

Susan Bennett

Musical Director

Nicholas Hulstine

Prom Photographer

Zachary Davis Brown

Freshman Boy

Lily Kozub

Freshman Girl

Clayton Frank

Bus Student 1 (uncredited)

Lou Consolo

Mall Shopper (uncredited)