Seann William Scott

Anson Wheeler

Paul Rudd

Danny Donahue

Christopher Mintz-Plasse

Augie Farks / Blufgan of Xanthia

Bobb'e J. Thompson

Ronnie Shields

Elizabeth Banks

Beth

Jane Lynch

Gayle Sweeny

Ken Jeong

King Argotron

Ken Marino

Jim Stansel

Kerri Kenney

Lynette Farks

A.D. Miles

Martin

Joe Lo Truglio

Kuzzik of Xanthia

Matt Walsh

Davith of Glencracken

Nicole Randall Johnson

Karen Shields

Carly Craig

Connie

Jessica Morris

Linda the Teacher

Vincent Martella

Artonius of Xanthia

Armen Weitzman

Party Dude

Jorma Taccone

Mitch from Graphics

Nate Hartley

Rule Master

David Wain

Chevron Baine

Amanda Righetti

Isabel

Tina Casciani

Gretchen

Nina Hellman

Barista

Louis C.K.

Security Guard

Zandy Hartig

Panda Loving Big

Keegan-Michael Key

Duane

Peter Salett

Ladislas of Pleasure

Lorna Scott

Horse Scooter Woman

Nick Nervies

Ronnie's Friend JJ

Kurt Doss

Ronnie's Friend Kyle

Tajh Bellow

Ronnie's Friend Zak

Shawn Huang

Ronnie's Friend Little Jack

Seth Herzog

Bell-Ringing Winged Creature

Jenny Robertson

Elevator Mom

Jeanine Jackson

Burger Hole Waitress

Matt Ballard

Valconian Swordsman

Cody Lawrence

Skateboard Kid

Arturo Gil

Chip Monk Puppeteer

Cindy Sorensen

Chip Monk Puppeteer

Matt Malloy

David Garvin (uncredited)

Michelle Lenhardt

Sarah (uncredited)

Nicole Neuman

Sara (uncredited)

George Sharperson

Jailer (uncredited)

Jenn Gotzon Chandler

Sexy Hiker (uncredited)

Mark Kubr

Centaur Man (uncredited)

Gary Sievers

Cassadonian LARP (uncredited)

Stephen Weese

Pirate (uncredited)