Male He has yellow hair and wears a green shirt with blue pants. He often gets angry because Ttangttangi, Syumdyangi, Kim Hyunsik, and Birdbrain constantly wreck his house, but he still cherishes them.

Male A sly Shiba Inu who is well-versed in the ways of the world. He loves adult videos and is characterized by always communicating through handheld signs. He is an influencer with millions of Instagram followers and calls Jjal Taesik "Butler." Despite being a Japanese breed, he is very patriotic and insists that Dokdo is Korean territory. There is a heartbreaking story involving his long-lost mother behind why he only communicates via signs. He is an animal.

Male The kindest among the Animal Friends. He usually plays the role of trying to stop the others or worrying when they cause trouble (though he eventually ends up joining in anyway). He was originally a lab mouse for a pharmaceutical company with evil intentions, but he narrowly escaped with the help of his friend Jjijji (a guinea pig). He lived secretly in a mousehole in the apartment before Jjal Taesik moved in, and they naturally started living together. Due to the experiments, he becomes massive and incredibly strong when he gets extremely angry, but since he is usually very gentle and kind, this rarely happens. He is an animal and calls Jjal Taesik "Butler."

Male The leader of the Animal Friends. He is an arrogant kitten with a nasty temper, but he's cute. He was originally a house cat living in luxury, but he left home thinking a real man should live as a stray. He gave up after a week and tried to go back, but he forgot the way and ended up settling in Yu Sumin's house by chance. He holds a secret regarding his birth and his father who disappeared during his childhood. He is an animal and calls Jjal Taesik "Butler."