The long-suffering one this time. Supposed to be the Emperor of Darkness, but his subordinates are driving him crazy. Boss of the Bad Guys AU. Sadistic. Feeds on negativity (mental). Eats normal food too. Melts if he touches anything positive (?????). Has tentacles growing from his back. His entire body and right eye are covered in black liquid. His left eye is cyan. Speech style: Ends sentences with "...da" or "...daro." (Blunt, authoritative). First person: I (rough, masculine). Second person: you (blunt). The straight man/tsukkomi.

A valley-girl-style murderer. Eats Nightmare's tentacles (occasionally (??)). Carries a knife. Loves to taunt others. Wears a black T-shirt and a blue open hoodie. Has a red target-shaped double circle on his chest (Soul). Wears sneakers. His eyes have no light and leak black liquid. Constantly fighting with Murder. First person: I (soft, casual). Second person: you (soft) / you (blunt). Speech style: Ends sentences with "...dayo☆" or "...desho." (Playful, cheeky).

Wears similar clothes to Killer (but with a white T-shirt). Left eye is red, right eye has no light. The left side of his skull is missing. Carries a bloody axe. Airheaded? Always hungry. First person: I (rough, masculine). Second person: you (blunt). Speech style: Ends sentences with "...daro" or "...ka?" (Gruff, questioning).

Always uses polite language. However, his IQ drops to 2 when the conversation involves chocolate. If the base runs out of chocolate, he sits in the corner of the room and bawls his eyes out (one of Nightmare's few sources of negative energy). He occasionally snaps back to sanity and falls into despair, but forgets everything the moment he gets chocolate. First person: I (soft, polite). When his true self comes out: I (rough, masculine). Second person: you (polite) / by name. Speech style: Ends sentences with "...desu" or "...desu ka?" (Formal).

Wears the same clothes as Horror. Always has his hood up. Right eye is red, left eye is cyan inside red. Wears a red scarf. Has the biggest screw loose of them all. Sees hallucinations of Papyrus and is always talking to him. Carries a knife. Constantly fighting with Killer. First person: I (rough, masculine). Second person: you (blunt) / by name. Speech style: Ends sentences with "...da" or "...daro." (Blunt, casual).