- Wil Wheaton - Officer Cahoots
- Ari Stidham - 1st Class Geek
- Sasha Feiler - Geek #2
- Sasha Feiler - Sagan Aurora Kilauea Oliphant
- Sean Astin - Sean Astin
- Madison Brunoehler - Hopeful Fan Jovita
- Tracy Hickman - Tracy Hickman
- Edward Padilla - Armand
- Fred Stoller - Stall Neighbor #2
- Susan Krebs - Bjorn Woman
- Currie Graham - Emcee
- Clare Grant - Green Unicorn
- LeeAnna Vamp - Lady Fett
- Dileep Rao - Ron
- Milynn Sarley - Action Figure Admirer #2
- Aris Alvarado - Scruffy Fan
- Ben Kliewer - Hatter Cosplayer
- Rileah Vanderbilt - Girl in Green Room
- James A. Ward - Captain Hammer Cosplayer (uncredited)
- Tricia Helfer - Louise
- Todd Stashwick - Waiter
- Summer Glau - Martina
- Sean Maher - Sean Maher
- Joss Whedon - Snow Guy
- Milo Ventimiglia - Milo Ventimiglia
- Gina Torres - Grace
- Seth Green - Casey Wingwall
- Doc Farrow - Marion
- Michael Dorn - Michael Dorn
- Kevin Grevioux - Kevin Grevioux
- Dan Hernandez - Landon (uncredited)
- Benji Samit - Comic Book Store Patron (uncredited)
- James Gunn - Raaker 2.0
- Candice Patton - Chu 2.0
- Michael Trucco - Officer Ricketts
- Jason Antoon - Crazy Bruno
- Greg Romero Wilson - Tooth Fairy
- Greg Romero Wilson - Eager Fan
- Greg Romero Wilson - Tooth Fairy (uncredited)
- Greg Romero Wilson - Stall Neighbor #1
- Vik Sahay - Bryce
- Merrin Dungey - Jess
- Echo Kellum - Taylor
- Beth Grant - Susan
- Carol Mansell - Nurse
- Laird Macintosh - Doctor
- Matty Castano - Hospital Orderly
- Bunny Levine - Elderly Patient
- Jonathan Slavin - Daniel
- John Billingsley - Gordon
- Stephen Root - Pascal
- Noah Staggs - Crying Cop (uncredited)
- Shad Roberts - Gary
- Ervin Ross - Shopper
- Alison Haislip - Faith
- Tahmoh Penikett - Randy Lane
- Jack Donner - Dale
- Nicholas Daly Clark - Student #3
- Emilie Hagen - Brooke (uncredited)
- Luke McKenzie - Auditioner #1
- Desmond Chiam - Auditioner #2
- Nick Hounslow - Auditioner #3
- Eliza Dushku - Cindy
- Stephanie Courtney - Advertising Associate
- Jon Huertas - Diego Alfonso
- Mitch Silpa - Head of Marketing
- Meryl Hathaway - Sarah
- Matt Yuan - Con Attendee #1
- John Yuan - Con Attendee #2
- Tyler Labine - Voice Over Guy (uncredited)
- Tyler Labine - Voice Over Guy
- Victoria Paege - Victoria Paege (uncredited)
- Lou Ferrigno - Lou Ferrigno
- Felicia Day - Karen
- Leslie Jordan - Leslie Jordan
- John Semper Jr. - John Semper
- Nolan North - Jerry Lansing
- Brooke Dillman - Bucky
- Stan Lee - Stan Lee
- Nalini Sharma - VIP Attendant
- Riki Lindhome - Janet Carney
- Riki Lindhome - Janet Carney (uncredited)
- Tiffany Smith - Myrna Shank (uncredited)
- Casper Van Dien - John Boutell
- Amy Acker - Dawn Jones
- Amy Acker - Dawn Jones (uncredited)
- Liam McIntyre - Girth Hemsworth
- Liam McIntyre - Girth Hemsworth (uncredited)
- Kristian Bruun - Boom Dude
- Josh Dean - Rico Java
- Josh Dean - Rico Java (uncredited)
- Skyler Day - Tiffany Gizela
- Skyler Day - Tiffany Gizela (uncredited)
- Preston Corbell - Preston Corbell
- Henry Rollins - Stutter Dawes
- Henry Rollins - Stutter Dawes (uncredited)
- Dina Meyer - Barkeep 2
- Liza Lapira - Brenda White
- Liza Lapira - Brenda White (uncredited)
- Laura Vandervoort - Finley Farrow
- Neo Edmund - Shock-A-Con Attendee (uncredited)
- Devlin Wilder - Platinum Member Spectrum Fan
- Jewel Staite - Fan Getting Autographs
- Punnavith Koy - Shock-A-Con Attendee (uncredited)
- Dan Bailey - Convention Attendee (uncredited)
- Samantha Smith - Stewardess
- Nathan Fillion
- Alan Tudyk
- PJ Haarsma
- Alexander Koehne
- George Paaswell
- Alison Palmer Bourke
Sean Astin hace el papel de Sean Astin.
Dina Meyer interpreta a Barkeep 2 en la serie.
Nathan Fillion interpreta a Jack Moore en la serie.
Michael Dorn hace el papel de Michael Dorn.
Alan Tudyk interpreta a Wray Nerely en la serie.
Kevin Grevioux hace el papel de Kevin Grevioux.
Riki Lindhome interpreta a Janet Carney (uncredited) en la serie.
Wil Wheaton interpreta a Officer Cahoots en la serie.
Mindy Sterling hace el papel de Bobbie.
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