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 Greta Lee voices Zoo Weasel Tom Kenny voices Backup Dog 2 Paul F. Tompkins voices Rattlesnake Paul F. Tompkins voices Little Melvin Paul F. Tompkins voices Happy Guy's Dog Nicole Byer voices The Warm Wet One Nicole Byer voices Cuddles Nicole Byer voices Montana Nicole Byer voices The Slappy One Bresha Webb voices Peanut Bresha Webb voices Cashier Jess Harnell voices Grapes Jess Harnell voices Malamute John Benjamin Hickey voices Happy Guy Mano Agapion voices The Straggler One Mano Agapion voices Leche