 | Zach Braff als Himself |
 | Ryan Gosling als Ilya Gerber (voice) |
 | Kate Hudson als Eva Ginz (voice) |
 | Oliver Hudson als Petr Ginz / Peter Feigl (voice) |
 | Brittany Murphy als Anonymous girl / Elsa Binder (voice) |
 | Amber Tamblyn als Elizabeth Kaugmann / Miriam Korber (voice) |
 | Elijah Wood als Klaus Langer / Dawid Rubinowicz (voice) |
| Lauren Lazin | Director |
| Alexandra Zapruder | Writer |
| Katy Garfield | Co-Producer |
| Lauren Lazin | Producer |
| Allison Leikind | Producer |
| Sergei Serpuhov | Line Producer |
| Dave Sirulnick | Executive Producer |
| Van Toffler | Executive Producer |
| Alexandra Zapruder | Producer |
| Richard Calderon | Editor |
| Susan Pelino | Sound Post Production Coordinator |
| Wouter van Herwerden | Sound |
| Stephanie Masarsky | Effects Supervisor |
| Fred Salkind | Visual Effects Designer |
| Anna Toonk | Visual Effects Producer |
| Benilda 'Bunny' Capule | Finance |
| T.J. Deacon | Production Assistant |
| Anita Chinkes | Music |
| Yanina Molina | Production Accountant |
| Eric Morgenstein | Production Assistant |
| Jonathan Mussman | Production Executive |
| Mustafa Turan | Production Accountant |
| Damian Vaca | Production Coordinator |
| Moby | Music |
| Kyle Kibbe | Director of Photography |
