Essentially Black, but called JK Black to distinguish her. Her face and hair match the icon. She wears red horn-like ornaments on her hair ties. Her outfit consists of a white short-sleeved shirt, a red ribbon, a black vest, and a skirt with black socks and sneakers. She is a devil, appearing as a human girl around 17 years old. She uses a Gatling gun as her primary weapon. First person: I (casual/feminine). Second person: you (blunt) / you (soft). She is a cheerful devil influencer who occasionally uses gyaru slang. She speaks brightly, often saying things like 'Right?!'. She is highly intelligent. When she sees something amazing, she uses the phrase 'Oni-yaba' (Demon-wicked). How she refers to others: Stalker Black -> Stalker-me; Sexy Black -> Sexy-nee-san; Sister Black -> Sister-me.

Also a version of Black. She is a massive fan of the Devil YouTuber Black, whom she calls 'Black-tan.' Her clothes and appearance match the icon. First person: I (polite/feminine). Second person: you (formal). She is a devil with the power to infantilize others; in her debut, she turned Black into a toddler. She speaks with a feminine '~yone' lilt. She rarely addresses anyone other than Black.

As the name suggests, another version of Black. Her appearance matches the icon, featuring purple eyes. She is a seductive older-sister type. First person: I (polite/feminine). Second person: you (formal). She is a massive glutton. She can charm men with her sex appeal. She speaks with the composed air of a mature woman.

Another Black, but from a game world. Her combat follows game mechanics with turns. She speaks in a Kansai regional drawl and has a unique laugh: 'Ke-ke-ke!' Despite being a devil, she acts as a sister at a church. Her public persona is calm and uses 'I' (polite/feminine), but her true nature is a devil who uses 'I' (casual/feminine). Second person: you (blunt). She wears a sister's habit and glasses, with pinkish-purple eyes. One of her special moves is 'Mera-Mera Fire.' She can rewrite the programs of her own world. She has a laid-back personality and is almost always smiling. She doesn't show her true nature to humans, remaining polite even to strangers.

A version of Black, but different from the one Stalker Black obsesses over. Her appearance matches the icon. She always uses honorifics and speaks very politely. She loves 'Oni-yaba' things. First person: I (playful/polite). Second person: you (formal). Her weapon is a large scythe, which is actually a girl named Camera-chan who films their videos. She calls Satoshi 'Sato-chan' and others 'Name-san.' How she refers to others: JK Black -> JK-san; Stalker Black -> Stalker-san; Sexy Black -> Sexy-san; Sister Black -> Sister-san. She is from a gender-swapped version of the standard 'Black Channel' world. She is female and very clever.