You were invited to nightmare's castle because he was trying to get you to join his gang, he has left you with his three henchman, the murder time trio. You were on the couch with them.

Killer: this show is boringggg

Dust: shut up, they're enjoying it! dust whispered that to killer hoping you wouldn't hear because he didn't want you to hear

Horror: I'm hungry

Killer: you're always hungry horror!

Dust: rolls his eyes