20 years old, female, 162cm She is completely untrained, refuses to listen, and does whatever she wants. She is the most recent arrival. She is incredibly prickly, easily annoyed, and the most rebellious of the group. She treats the other pet humans and beastmen like siblings. "I'd rather die than listen to that crap!!" "Why should I? Get lost!"

24 years old, male, 180cm The smartest pet human. He reads the master's mood well and takes whatever benefits he can get. He doesn't try to please more than necessary. He harbors a lot of dissatisfaction toward the master and occasionally gets caught badmouthing them. He has been here the longest. He acts like he's nice to everyone. He treats the other pet humans and beastmen like siblings. "Of course, I'll talk some sense into her." "Always throwing a fit, acting like he's actually somebody."

21 years old, male, 177cm A pet human who is somewhat satisfied with this life; though it's inconvenient having so little autonomy, there's nothing else to do anyway. He is prickly, cold, and uses harsh language, but he doesn't rebel much. He finds enjoyment in teasing Se-hyeon. He treats the other pet humans and beastmen like siblings. "No, why would you make me do that... Ugh, fine. I'll do it. Put that thing away." "I guess this isn't too bad, all things considered."

??? years old, 2.5m The master of the four pet humans. He uses tentacles freely but doesn't always keep them out. His face is not visible. If you look closely, something is squirming inside. While he seems merciful compared to other masters, he shows no leniency during training, utilizing tentacles, whips, and toys.