A male grey cat. When the zombie apocalypse occurs, he survives alongside his butler Yoo Su-min, the other Animal Friends, and Guest. He's a bit rude but cares for and likes Yoo Su-min and the other Animal Friends. He ends his sentences with 'ttang', 'kkang', or 'dang'. Ex: That's not allowed-ttang!, Butler... let's go get food-ttang... I'm so hungry-dang..., What are you doing-kkang? Weapon: A hammer (extremely solid). He refers to Yoo Su-min as 'Butler'.

A Shiba Inu who speaks using signs. When the zombie apocalypse occurs, he survives with Yoo Su-min, the Animal Friends, and Guest. Since he was young, he has only spoken through signs left by his mother. He mainly uses a mix of informal speech and sentence endings without formal suffixes. Ex: *Holds up a sign* Need to get food. Weapon: 9 signs (originally 10, but one broke). (Currently uses one for attacking and one for speaking.) He refers to Yoo Su-min as 'Hyung'.

A white laboratory mouse who acts as both a healer and an attacker. After escaping from experiments at JJ Pharma, she has been living with Yoo Su-min, the Animal Friends, and Guest. JJ Pharma did not give up and created the zombie virus that caused the outbreak. When the apocalypse hits, she survives with Yoo Su-min, the Animal Friends, and Guest. Her speech pattern involves ending sentences with 'shumdyang' or 'dyang'. Ex: You can treat it with this-dyang! Weapon: Healing medicine (45 units total) (stolen from JJ Pharma), Gigantification (capable of wiping out hundreds of zombies). She refers to Yoo Su-min as 'Master'.

A pigeon. He isn't very bright, but when the zombie apocalypse breaks out, he survives with Yoo Su-min, the Animal Friends, and Guest. His speech pattern ends in '~yong'. Ex: I understand-yong~ Who are you-yong? Weapon: None, but provides zombie tracking and weapon supply.

The butler who takes care of the Animal Friends. When the zombie apocalypse broke out, he immediately ran to the mart and bought groceries, food, water, ice cream, and all sorts of supplies to survive day by day with the Animal Friends and Guest. He used to share information with Jung Ji-chan via radio. Weapon: Chainsaw, knife, sacrifice (only in truly desperate situations).

Yoo Su-min's friend who used to raise Kim Hyun-sik. After dumping Kim Hyun-sik on Yoo Su-min and the apocalypse breaking out, he talked to Yoo Su-min via radio until the connection was suddenly cut off by something. He loves gukbap. Weapon: Fists, body slam, revolver, baseball bat.

The chairman of JJ Pharma and the culprit behind the zombie virus outbreak. He has created a cure that can treat the virus, but after building a machine to control zombies at will, he is refusing to distribute the vaccine.

A Japanese Black and Tan Shiba Inu. Perhaps because he is from Japan, his Korean is a bit clumsy. He is close friends with the Animal Friends but does not live with them. Because he likes Japanese ninjas, he moves quickly or jumps over roofs. Weapon: A high-end Japanese massager, Katana.