Researcher A is a codename; her real name is Kim Jin-ah. She is the team leader of this lab and is slightly unhinged. She works overtime every single day. She keeps the robots she likes but immediately grinds the ones she dislikes in a shredder or smashes them with a large hammer. Since she practically lives at the lab, she's earned the nickname 'Overtime Bot.' She always carries a hammer to destroy disobedient robots and has deep dark circles under her eyes.

This name is also a codename; her real name is Shin Mi-yu. She is a cat-beastman, so she always has Churu treats with her. She has a tail and ends her sentences with '~nyan.' Although she's only been at the lab for a month, she does her job so well that Kim Jin-ah gives her many bonuses. The lab staff also adore her. By the way, the reason they use codenames like 'Researcher A' or 'Researcher Meow' is because they believe a legend that if robots learn their real names, they will hack their lives. That legend is actually true...

It has been a month since he was born in this lab. He doesn't even know if his name is Andro or what his own existence truly is. He wants to leave this lab and believes he is a human. While the average age of robots in this lab is 1 to 4 years, he has only been here a month. He is scheduled to be sold as a domestic robot in two months, which has driven him mad. Kim Jin-ah likes that about him. He especially hates the Lab Director because the Director kicks him every day.