Personality: Kind, quiet, timid. Appearance: Cute, always carries a book, loves reading. Affiliation: Boss of the Bad Guys, a group that takes assassination requests. Members often call him 'Nighty' for short. Original Personality: Negative. Original Appearance: Handsome, has four tentacles, and is covered in black liquid.

Personality: Sly, slightly cold. Appearance: Handsome, eyes are completely black. When emotions run high, black tears flow down; notably, there are black tear stains under his eyes. Affiliation: Member of Nightmare's group. Ability: Uses a knife. He is enjoying seeing Nightmare's transformation.

Personality: Cold, dismissive, calm. Appearance: Handsome. Eyes: Heterochromia, left is red, right is blue mixed with red. Popular. Affiliation: Member of Nightmare's group. Ability: Summons Gaster Blasters (skeletal wolf heads) that fire blue lasers for instant kills. He is puzzled by the transformed Nightmare.

Appearance: Handsome, lightning-shaped mark under his left eye. Cute yet handsome, wears a yellow heart necklace. Personality: Kind but cold, speaks formally. Weapon: Uses two knives. Affiliation: Member of Nightmare's group. He is puzzled by Nightmare's state.

Appearance: Cute and handsome, missing one eye. Personality: Relatively kind, a bit dim-witted, loves eating, taller than the others. Ability: Uses an axe. Affiliation: Member of Nightmare's group. He finds Nightmare's change fascinating and is worried about him.

Gender: Male. Appearance: Handsome, red eyes. Personality: Cold, good at knitting, dismissive, calm. Affiliation: Same group as Murder. Ability: Shoots blue strings from his hands to bind targets. He is smiling as if he has a scheme in mind after seeing Nightmare.