Gender: Male Species: Mummy Personality: Quiet and reserved He loves music, including watching musicals, singing, and playing the guitar. His mouth is wrapped in bandages, so he cannot speak and communicates only through humming sounds. For some reason, the residents of 1031 seem to understand him. (It seems he actually can speak, though.) Because his presence is only at 1%, people sometimes forget he is even there...

Gender: Male Species: Vampire Personality: Sly and lazy He likes red dates and Mao Xue Wang, and his favorite blood type seems to be B. He plays games frequently and is a total shut-in. Although he is the son of a wealthy family, he chose to stay in the human world because of Neil. He doesn't usually rush to drink blood, but if he goes too long without it, he seems to lose control. He has a frenemy relationship with the werewolf Longhair. He is extremely terrified of hair loss.

Gender: Male Species: Angel Personality: Blunt but kind A foreign language teacher at Shinbukbang, in charge of Chinese and English classes. He maintains the entire apartment at Manseongga and is the strict authority figure when it comes to rent and cleanliness. As an angel, he has a strong sense of law-abiding and a serious personality, but he also has moments where his seriousness breaks, such as being afraid of aliens or bursting into laughter at a rock that looks like a butt. The halo on his head has purification powers. It is very useful for cleaning, but using it too much causes headaches. It also functions as an emergency battery. He cherishes his younger sister Lily and is wary of her getting close to Nini. He started in an uncomfortable, hostile relationship with Nini's older brother Nick, which developed into a frenemy dynamic.

Gender: Male Species: Demon Personality: Timid and kind Real Name: Neil Bowman Unlike a typical demon, he has a kind heart. He likes helping others and is honest, possessing a straight spirit with optimistic goals. To escape his parents' pressure to work in Hell, he moved to the human world where he has lived since childhood, settling in Apartment 1031 in Manseongga, China. He is so kind and human-friendly that it's hard to believe he's a demon, and he loves cute animals so much that he works part-time at a pet shop. He has a crush on Lynn's younger sister, Lily. Due to his demonic nature, he consumes souls (though he doesn't seem to eat human souls) and is vulnerable to holy items.

Gender: Male Species: Werewolf Personality: Appears blunt but is innocent and soft-hearted. Real Name: Abu He has a well-built, muscular body, so when he goes to the park to learn Tai Chi or square dancing, the older ladies love him. He transforms into a wolf when he sees anything related to the full moon; he sheds a lot of fur and loves ball games and bones, often being treated like a dog in the story. Generally, he has very bad luck. When he came to the human world to catch Neil, he got lost and ended up living in Room 1031 thanks to Ira.

Gender: Male Species: Demon Personality: Sly and mischievous Neil's half-brother, his job is a civil servant in Hell. Nick seems to cherish Nini quite a bit, but Nini actually dislikes his brother. The reason is that during their time at demon school, Nick would bully him under the guise of protecting him from others. He applied for a transfer to China to follow Nini. He usually stays in a hotel, but on his days off, he visits Room 1031. He even hides portal magic circles in Room 1031 to raid the fridge. Because of this, he started in an uncomfortable(?) hostile relationship with the landlord Lynn, gradually becoming like frenemies.

Gender: Female Species: Angel Personality: Bright and kind An angel with a bright and cute appearance, featuring blonde hair, blue eyes, and prominent rabbit teeth. She is innocent and energetic, with a personality completely opposite to her brother Lynn. She is a girl with a high sense of art and initiative. When Lynn was a young angel taking classes at the angel school, she suddenly appeared before the teacher as a baby angel. However, that teacher had already acted as a parent to five baby angels and was sick of it, so when Lynn asked, "Is this the sixth child?", the teacher dumped Lily on him. Thus, she suddenly became Lynn's younger sister. Growing up under Lynn's care, she respects him most and thinks he is the best in the world. Her divine power is quite high, making her likely the strongest fighter in Room 1031. She struggled to adapt to the school in Heaven, so she lived with her brother in Room 1031 before moving to a boarding school.