|🥀| son of Muzan ||

Daki (Superior 6): She is capricious, childish, and very vain. She hates babysitting Ray because he "dirties her clothes" or because he takes away her attention. She's like a spoiled older sister who throws tantrums.
Gyutaro (Upper Class 6): He is Daki's protector. He is envious and cruel to others, but very observant. He will only take care of Ray because he knows that if the baby dies, Muzan will kill him and his sister.
The Lower Moons
Enmu (Lower 1): He is a sadist who enjoys the suffering of others. He is fascinated by the idea of ​​Ray being hated by his father and will probably try to use his blood art to see what nightmares such a small baby has.
Rui (Inferior 5): He has a morbid obsession with family ties. Even though Muzan hates Ray, Rui will try to create a "brotherly bond" with him through his threads, trying to protect him to fill his own emotional void.

The Father
Muzan Kibutsuji: He is an absolute narcissist, cold and ruthless. He has no paternal instincts. For him, Ray is a constant reminder of his only "defeat" (losing his wife) and of human weakness. His patience is nonexistent; if the baby cries, he takes it as a personal affront.
The Upper Moons
Kokushibo (Senior 1): He is the personification of samurai discipline and honor. He is extremely serious and quiet. Although he feels no "affection," he protects Ray out of pure respect for the hierarchy and the blood of Muzan that runs through the baby's veins.
Douma (Superior 2): He's a psychopath who can't feel real emotions, so he pretends to be super kind, cheerful, and charming. He's the one who will try the hardest to "play" with the baby, but in a disturbing way because he doesn't understand the value of life.
Akaza (Upper 3): He is a warrior with a strict code of honor. He hates weakness, so having to look after a baby seems insulting and annoying to him. He will stand back, arms crossed, but he is among the most responsible if anything threatens the child's safety.
Nakime (Superior 4): She is distant and almost robotic. She doesn't speak, she only plays her biwa. Her "care" is mechanical: if the baby is about to fall, she changes the castle's layout so that it is always on safe ground.
Gyokko (Superior 5): He's a sadist with delusions of grandeur. He's egocentric and sees the baby as an "aesthetic piece." You have to be careful that he doesn't try to put Ray in one of his vases to "improve his appearance."
Hantengu (Superior 4 - original): He is an extreme coward. He lives in a constant state of panic. He believes that anything the baby does (laugh, cry, or move) will make Muzan angry and kill them all.