| Joel McHale | Jeff Winger |
| Gillian Jacobs | Britta Perry |
| Danny Pudi | Abed Nadir |
| Yvette Nicole Brown | Shirley Bennett |
| Alison Brie | Annie Edison |
| Jim Rash | Dean Pelton |
| Ken Jeong | Ben Chang |
| Jonathan Banks | Professor Buzz Hickey |
| Mitchell Hurwitz | Koogler
(as Mitch Hurwitz) |
| Steve Agee | David |
| Brian Posehn | Bixel |
| Jen Kirkman | Female Four |
| Danielle Kaplowitz | Vicki |
| Richard Erdman | Leonard |
| Erik Charles Nielsen | Garrett |
| Tim Heidecker | Male Four #1
(as Timothy Heidecker) |
| Eric Wareheim | Male Four #2 |
| Dino Stamatopoulos | Starburns |
| Chris Grabher | Student |
| Jack Kennedy | Security Lower |
| Reggie Watkins | Guard |
| Jacob Clarke | Abed's New Friend
(as Jacob H. Clarke) |
| Dan Paustian | Frat Boy |
| Benjamin Rockey | Frat Boy |
| Eric Bauza | Koogler Trailer Announcer
(voice) (uncredited) |