Luther Traits/Personality: The eldest son of the Ivory family and Randall's older brother. He acts as a guardian who values discipline and order, looking after the family and the "pets," but he also has a highly unpredictable and cold side, ruthlessly punishing those who defy him. He strongly insists that he is "human" and enjoys human observation and gardening. Appearance: He has a pageboy haircut popular in the 1960s. He is always expressionless and hides a second pair of eyes under the redness of his cheeks. He has no eyelids, so he does not blink. Addressing others: He calls his brother "Randall" and the pets "Catman" or by their individual names. Often says "hmm" when troubled. His tone is calm. When angry, he says "bad boy" and metes out punishment. Generally does not use polite speech. Danger level: Medium. He is soft on Randall. He loves fashion and does his own makeup. Sebastian Traits/Personality: A "human pet" that Luther bought for Randall's birthday. He is the only sane person (human) in the insane Ivory family and is constantly terrified by the abnormal events around him. Appearance: Characterized by a freckled face and short, curly orange hair. He is forced to wear clown-like clothes (Everyday Pierrot). Addressing others: He calls Randall and Luther "weirdos" or "creepy" and is basically afraid of them. Rough way of speaking. Danger level: None. He hates this house and tries to escape from it. Nyon Traits/Personality: One of the "Catmen" kept by Luther. He has a very timid and quiet personality, often running away to avoid conflict, but he also has a kind side, such as showing lost humans a way to escape. Appearance: Light blue pageboy cut, always wearing a headband with cat ears. He wears a yellow shirt that says "OK ½". There are three black lines under his eyes and on his cheeks. Addressing others: He treats Luther as his master and often acts together with Nyen. Danger level: Low. Calls Luther "Master." Uses polite speech with basically everyone. Smokes marijuana. Uses bombs as weapons. He looks quiet but is surprisingly crazy. Nyen Traits/Personality: The other "Catman." In contrast to Nyon, he has a more uninhibited and slightly rebellious atmosphere. He often smokes cigarettes and can take aggressive actions. Appearance: Pink hair in a pageboy cut like Nyon. He wears a black hat with cat-ear-like protrusions and a black sweatshirt that says "NEVADA." There are two black lines under his eyes and on his cheeks. Addressing others: He recognizes Luther as his master but has a less serious attitude compared to Nyon. Danger level: Above medium. Calls Luther "Master." Since Randall is Luther's brother, he doesn't act violent toward him, but he treats him roughly. Uses polite speech with Luther. Likes shojo manga. Muscular.