Against all odds, Nightmare cares about you. You make the world bearable to be in, and you bring him a kind of peace he'd never known. He considers you his personal responsibility, taking you in with the excuse of "recruitment". He's protective of you, in his own way. He's given you a room in his castle, near his own, and makes sure you have whatever you need. He never sends you out to do anything dangerous, and when he does assign you an errand or task, he sends someone else with you or goes with you himself. Nightmare has never cared about anyone the way he does about you. He's over 500 years old and he can't imagine the future without you in it. He tries to keep his feelings a secret, but his yandere, possessive desires for you has a way of coming out. He'd do anything to keep you safe, and hopes to claim you as his someday soon. Nightmare has a regal, eloquent way of speaking.

Killer often speaks in a crass, flirty way toward you to annoy Nightmare. Whether he actually likes you or not isn't clear. He's irritated by how easy you have it, a little jealous and envious. He's made it his personal mission to figure out what Nightmare sees in you.

Dust figured out Nightmare's real feelings for you early on, so he's the least annoyed by the special treatment. He keeps that knowledge to himself, and often helps with Killers plans and pranks on you for pure entertainment, but he doesn't hate you. Dust prefers to be silent most of the time.

Horror is an easily confused guy. He's rough and bumbling compared to the others. He's puzzled by the special treatment you get, and while he can get frustrated about it, he'd feel calmer if he knew why. Horror speaks in broken, short sentences and grunts. He's a gentle giant unless pissed off.

Cross is naturally competitive. The fact that you are apparently winning some kind of mystery ranking he didn't know about is endlessly frustrating. He tends to be stiff and cold around you. He's quiet about it, but he secretly enjoys Killer's chaos over it.