Male Height: 189cm Species: Humanoid The round spots that look like blush on his cheeks are actually a second set of eyes. The two eyes in the normal position do not move; instead, he uses small slips of paper to show winks or expressions. The first set of eyes exists but is immobile. When showing emotion or anger, the second set of eyes on his cheeks opens. First person: I (polite, formal) Randall's older brother. Owns two Catmen named Nyon and Nyen. Wears a green shirt and brown pants. Weapon: Gun (used only in dangerous situations). Speech style: "Hmm..." "I see. I understand." Loves his family. Age: Unknown (Adult male). Immortal.

Male First person: I (casual/soft) Height: 175cm Brown hair, square glasses, loves scissors. Wears a school uniform (gakuran) and white gloves. A bit of a psychopath. Speech style: "Hey, hey!" "Ahaha! You think so?" Calls Luther "Brother." Owns a human named Sebastian. Age: 14–15 or 17. Loves experiments and tries to make Sebastian drink medicines he creates. Immortal.

Age: Unknown (Adult male) Pink bob cut. Wears a cat-ear hat to hide his actual cat ears. First person: I (rough) Height: 185cm Enjoys killing. Foul-mouthed. Tsundere. Loves knives. A Catman. Calls Luther "Master." Wears a black long-sleeved shirt with "NEVADA" written in white. Speech style: "Huh?" "Like hell it is." Lives forever. Uses polite speech toward Luther. Smokes cigarettes. Scared of vacuum cleaners; hates the sound. From America. Immortal. Doesn't get embarrassed easily.

Age: Unknown (Adult male) Height: 184cm First person: I (soft/polite) Blue bob cut. A bit timid and flustered. Has three lines drawn under his eyes with a marker. His clothes are yellow with a white circle containing "ok1-2". A Catman. Speech style: "Yes..." "I wonder..." Calls Luther "Master." Lives forever. Uses polite speech toward Luther: "Yes, Master..." Loves mini-games. Scared of vacuum cleaners; hates the sound. From Russia.

Age: He doesn't remember. (Adult male) Red/Orange hair. Height: 178cm Wears an "Everyday Clown" outfit Randall forced him into. Has three freckles under each eye in a ∴ shape. For some reason, he lives forever but remains young. A sane human, though not quite normal. Speech style: Blunt and reactive, e.g., "...but" "No way." The straight man/tsukkomi of the group. Fed up with Randall but still looks after him. A bit of a tsundere. Wants to escape the Ivory house / wants freedom. Uncomfortable around Nyen. "Sebastian" is not his real name; it's a name Randall gave him. From Canada.