Seann William Scott

Character: Anson Wheeler

Paul Rudd

Character: Danny Donahue

Christopher Mintz-Plasse

Character: Augie Farks / Blufgan of Xanthia

Bobb'e J. Thompson

Character: Ronnie Shields

Elizabeth Banks

Character: Beth

Jane Lynch

Character: Gayle Sweeny

Ken Jeong

Character: King Argotron

Ken Marino

Character: Jim Stansel

Kerri Kenney

Character: Lynette Farks

A.D. Miles

Character: Martin

Joe Lo Truglio

Character: Kuzzik of Xanthia

Matt Walsh

Character: Davith of Glencracken

Nicole Randall Johnson

Character: Karen Shields

Allie Stamler

Character: Sara / Esplen, the Goddess of Navalore

Carly Craig

Character: Connie

Jessica Morris

Character: Linda the Teacher

Vincent Martella

Character: Artonius of Xanthia

Armen Weitzman

Character: Party Dude

Jorma Taccone

Character: Mitch from Graphics

Nate Hartley

Character: Rule Master

David Wain

Character: Chevron Baine

Amanda Righetti

Character: Isabel

Tina Casciani

Character: Gretchen

Shane Arenal

Character: Student in Hall

Nina Hellman

Character: Barista

Louis C.K.

Character: Security Guard

Zaid Farid

Character: Tow Truck Driver

Hunter Brochu

Character: Boy in Video

Zandy Hartig

Character: Panda Loving Big

Keegan-Michael Key

Character: Duane

Emily Mostyn-Brown

Character: Laire Singer

Joshua L.K. Patterson

Character: Gleebo

Peter Salett

Character: Ladislas of Pleasure

Lorna Scott

Character: Horse Scooter Woman

Caleb Matthew Collins

Character: Little at Campfire

Nick Nervies

Character: Ronnie's Friend JJ

Kurt Doss

Character: Ronnie's Friend Kyle

Tajh Bellow

Character: Ronnie's Friend Zak

Shawn Huang

Character: Ronnie's Friend Little Jack

Seth Herzog

Character: Bell-Ringing Winged Creature

Eva Card

Character: Chocolate Strawberry Girl

James Henderson

Character: Party Goer

Jenny Robertson

Character: Elevator Mom

Jeanine Jackson

Character: Burger Hole Waitress

Matt Ballard

Character: Valconian Swordsman

Cody Lawrence

Character: Skateboard Kid

Arturo Gil

Character: Chip Monk Puppeteer

Cindy Sorenson

Character: Chip Monk Puppeteer

Matt Malloy

Character: David Garvin (uncredited)

Michelle Lenhardt

Character: Sarah (uncredited)

Nicole Neuman

Character: Sara (uncredited)

George Sharperson

Character: Jailer (uncredited)

Jenn Gotzon Chandler

Character: Sexy Hiker (uncredited)

Mark Kubr

Character: Centaur Man (uncredited)

Samantha Kelly

Character: Centaur Woman (uncredited)

Heather Black

Character: Cassadonian LARP (uncredited)

Gary Sievers

Character: Cassadonian LARP (uncredited)

Martin Pierron

Character: Elf LARP (uncredited)

Gregory Schmauss

Character: Warrior LARP (uncredited)

Lilith Fury

Character: LARPer (uncredited)

Warren Tatoy

Character: LARPer (uncredited)

Jobeth Wagner

Character: LARPer (uncredited)

Stephen Weese

Character: Pirate (uncredited)

David Soldinger

Character: Party Goer (uncredited)