A lonely cat living in a mall pet shop has a sour outlook on life until, in the midst of the holiday rush, she’s swept up into a robbery and a friendship with a human girl.
| Actor | Role |
|---|---|
 Aubrey PlazaGrumpy Cat / Aubrey Plaza | Grumpy Cat / Aubrey Plaza |
 Megan CharpentierChrystal | Chrystal |
 Daniel RoebuckGeorge | George |
 David James LewisMr. Crabtree | Mr. Crabtree |
 Russell PetersSanta | Santa |
| IIsaac HaigDonny | Donny |
 Evan ToddZack | Zack |
 Shauna JohannesenTabby | Tabby |
 Casey MandersonJesse | Jesse |
 Stephen StantonJojo (voice) | Jojo (voice) |
 Trevor LissauerJacky (voice) | Jacky (voice) |
 Veronica AlicinoCarla / Colette | Carla / Colette |
 Trevor DevallWilson (voice) | Wilson (voice) |
 Chris WilliamsLance the Hamster (voice) | Lance the Hamster (voice) |
 Tyler JohnstonGill Brockman | Gill Brockman |
 Ryan BeilCorbin | Corbin |
 Tasya TelesNicole | Nicole |
 Sergio OsunaAlejandro | Alejandro |
 Sidika LarbesMom | Mom |
 Dylan PoyserLittle Boy | Little Boy |
 Jay BrazeauRoger | Roger |
 Graeme DuffyPhotographer | Photographer |
| JJean HamiltonOld Lady | Old Lady |