- Joseph Gordon-Levitt Ethan
- Seth Rogen Isaac
- Anthony Mackie Chris
- Lizzy Caplan Diana
- Jillian Bell Betsy
- Mindy Kaling Sarah
- Michael Shannon Sr. Green
- Miley Cyrus Miley Cyrus
- James Franco James Franco
- Lorraine Toussaint Sra. Roberts
- Randall Park Boss
- Tracy Morgan Narrador / Santa
- Ilana Glazer Rebecca Grinch