(Just a warning... this book will include some slight and full nsfw headcannons.)
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Before sex, Ink is cocky and flirty. But during it, he becomes extremely sensitive
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On October 30th, Nightmare attempts to kill one of the Bad Sanses. It changes each year. Everyone is extremely cautious around Nightmare during that day
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Passive Nightmare owns a royal purple octopus plushie and can't sleep without it unless Dream cuddles him
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When in heat, Error will just go to his room in Nightmare's castle, lock the door, and play video games. Mostly he'll play DDLC or Among Us.
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One time, Horror put dirt in his head and planted a rose in the dirt. Why? Because he could.
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Dream is stalked 4 hours a day by Nightmare. Does Dream know this? No.
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Ink could be 100 miles away from Broomie, but will instantly know who touched his Broomie and teleport behind them and give them a vibe check or just strangle them till they pass out.
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Dusttale Papyrus isn't actually encouraging Dust to kill. Dust's mind twists Dusttale Papyrus's words. So when Dusttale Papyrus says, "Stop! Don't kill them!", Dust's mind makes it so it sounds like Dusttale Papyrus said, "Kill them!"
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Fell altered his magic so his eye and magic would be red instead of blue since red is more intimidating
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Geno wakes up early in the morning to make all his kids lunch. He spends a lot of time making the food look fun and cute.
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Dream has insomnia and can only sleep if he's knocked out.
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Nightmare will cling to the Bad Sanses whenever they're in a bad mood. He feeds off their negativity while trying to cheer them up since he cares about them.
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If Nightmare is extremely upset and is considering going on a killing spree, if someone he cares about comes up and pets him, he'll instantly calm down. He'll purr like a cat while his tentacles wag behind him.
