 | Jesse Eisenberg als Casey |
 | Alessandro Nivola als Sensei |
 | Imogen Poots als Anna |
 | Steve Terada als Thomas |
 | David Zellner als Henry |
 | Phillip Andre Botello als Kennith |
 | Jason Burkey als Alex |
 | Hauke Bahr als Grant |
 | Dallas Edwards als Manny |
| Mike Brooks als Steve |
| C.J. Rush als Other Steve |
 | Leland Orser als Detective McCallister |
 | Josh Fadem als Serial Killer |
 | Davey Johnson als Gun Store Owner |
| Katherine Martin als Bakery Woman |
| Cameron Murphy als New White Belt |
| Nicholas Hulstine als Pickup Truck Driver |
| Lena Friedrich als French Girl |
| Frederic Spitz als French Guy |
| Louis Robert Thompson als Veterinarian |
| Katherine Smith-Rodden als Store Cashier |
| Apollo Bacala als Karate Day Class Student |
 | Caroline Amiguet als French Audio Instructor |
| Riley Stearns | Director |
| Andrew Kortschak | Producer |
| David Zellner | Executive Producer |
| Nathan Zellner | Executive Producer |
| Sarah Beth Shapiro | Editor |
| Stephanie Whonsetler | Producer |
| Walter Kortschak | Producer |
| Charlotte Royer | Production Design |
| Michael Ragen | Director of Photography |
| Heather McIntosh | Original Music Composer |
| Riley Stearns | Screenplay |
| T. Ryan Mooney | Stunt Double |
| May Satsuki Asai | Visual Effects |
| Chad Blevins | Art Direction |
| Wayne Beauchamp | Special Effects Coordinator |
| Ross Kohnstam | Stunts |
| Nikki Stanley | Stunt Double |
| Josh Fried | Stunt Double |
| Mindy Kelly | Stunt Coordinator |
| Amy L. Forsythe | Special Effects Makeup Artist |
| Heather Bonomo | Stunts |
| Casey Curtiss | Digital Compositor |
| Stephanie Adams | Second Assistant Director |
| Diletta Di Nicolantonio | Assistant Director |
| Siena Brown | First Assistant Director |
| Jami Villers | Costume Design |
| Toby Sells | Prosthetic Designer |
| Elissa Ruminer | Key Makeup Artist |
| Aaron Worman | Special Effects Makeup Artist |
| Emily Blevins | Set Decoration |
| Amy L. Forsythe | Makeup Department Head |
| Becca Brooks Morrin | Set Dresser |
| Demetri Evdoxiadis | Supervising Sound Editor |
| Demetri Evdoxiadis | Sound Re-Recording Mixer |
| Zack Goldsborough | Sound Recordist |
| Raymond Park | Sound Effects Editor |
