Guest Stars Bresha Webb voices Nibbles Maria Bamford voices Jill Greta Lee voices Bubbles Maria Bamford voices Small Fun Raccoon Mano Agapion voices Stelios John Benjamin Hickey voices Brett Michaela Dietz voices Kit Kat Nicole Sullivan voices Woman Nicole Sullivan voices Bunny Tom Kenny voices Diablo's Human Dad Paul F. Tompkins voices Porkchop John Benjamin Hickey voices Blueberry Nicole Sullivan voices Happy Guy's Mom Tom Kenny voices Backup Dog 2 Greta Lee voices Zoo Weasel Nicole Byer voices The Slappy One Nicole Byer voices Montana Nicole Byer voices Cuddles Nicole Byer voices The Warm Wet One Paul F. Tompkins voices Rattlesnake Paul F. Tompkins voices Little Melvin Paul F. Tompkins voices Happy Guy's Dog Bresha Webb voices Peanut Bresha Webb voices Cashier John Benjamin Hickey voices Happy Guy Jess Harnell voices Malamute Jess Harnell voices Grapes Mano Agapion voices The Straggler One Mano Agapion voices Leche